diff --git a/homeassistant/components/automation/__init__.py b/homeassistant/components/automation/__init__.py
index 856060f8c75..6243c11a791 100644
--- a/homeassistant/components/automation/__init__.py
+++ b/homeassistant/components/automation/__init__.py
@@ -18,6 +18,7 @@ from homeassistant.const import (
     ATTR_ENTITY_ID,
     ATTR_MODE,
     ATTR_NAME,
+    CONF_ACTIONS,
     CONF_ALIAS,
     CONF_CONDITIONS,
     CONF_DEVICE_ID,
@@ -27,6 +28,7 @@ from homeassistant.const import (
     CONF_MODE,
     CONF_PATH,
     CONF_PLATFORM,
+    CONF_TRIGGERS,
     CONF_VARIABLES,
     CONF_ZONE,
     EVENT_HOMEASSISTANT_STARTED,
@@ -86,11 +88,9 @@ from homeassistant.util.hass_dict import HassKey
 
 from .config import AutomationConfig, ValidationStatus
 from .const import (
-    CONF_ACTIONS,
     CONF_INITIAL_STATE,
     CONF_TRACE,
     CONF_TRIGGER_VARIABLES,
-    CONF_TRIGGERS,
     DEFAULT_INITIAL_STATE,
     DOMAIN,
     LOGGER,
diff --git a/homeassistant/components/automation/config.py b/homeassistant/components/automation/config.py
index c4425ce099a..23ae10eea2b 100644
--- a/homeassistant/components/automation/config.py
+++ b/homeassistant/components/automation/config.py
@@ -14,11 +14,15 @@ from homeassistant.components import blueprint
 from homeassistant.components.trace import TRACE_CONFIG_SCHEMA
 from homeassistant.config import config_per_platform, config_without_domain
 from homeassistant.const import (
+    CONF_ACTION,
+    CONF_ACTIONS,
     CONF_ALIAS,
     CONF_CONDITION,
     CONF_CONDITIONS,
     CONF_DESCRIPTION,
     CONF_ID,
+    CONF_TRIGGER,
+    CONF_TRIGGERS,
     CONF_VARIABLES,
 )
 from homeassistant.core import HomeAssistant
@@ -30,14 +34,10 @@ from homeassistant.helpers.typing import ConfigType
 from homeassistant.util.yaml.input import UndefinedSubstitution
 
 from .const import (
-    CONF_ACTION,
-    CONF_ACTIONS,
     CONF_HIDE_ENTITY,
     CONF_INITIAL_STATE,
     CONF_TRACE,
-    CONF_TRIGGER,
     CONF_TRIGGER_VARIABLES,
-    CONF_TRIGGERS,
     DOMAIN,
     LOGGER,
 )
diff --git a/homeassistant/components/automation/const.py b/homeassistant/components/automation/const.py
index c4ac636282e..f9d2fc1b77f 100644
--- a/homeassistant/components/automation/const.py
+++ b/homeassistant/components/automation/const.py
@@ -2,10 +2,6 @@
 
 import logging
 
-CONF_ACTION = "action"
-CONF_ACTIONS = "actions"
-CONF_TRIGGER = "trigger"
-CONF_TRIGGERS = "triggers"
 CONF_TRIGGER_VARIABLES = "trigger_variables"
 DOMAIN = "automation"
 
diff --git a/homeassistant/components/template/__init__.py b/homeassistant/components/template/__init__.py
index 15a73cf3de5..c3f832b0c54 100644
--- a/homeassistant/components/template/__init__.py
+++ b/homeassistant/components/template/__init__.py
@@ -12,6 +12,7 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     CONF_DEVICE_ID,
     CONF_NAME,
+    CONF_TRIGGERS,
     CONF_UNIQUE_ID,
     SERVICE_RELOAD,
 )
@@ -27,7 +28,7 @@ from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import async_get_integration
 from homeassistant.util.hass_dict import HassKey
 
-from .const import CONF_MAX, CONF_MIN, CONF_STEP, CONF_TRIGGER, DOMAIN, PLATFORMS
+from .const import CONF_MAX, CONF_MIN, CONF_STEP, DOMAIN, PLATFORMS
 from .coordinator import TriggerUpdateCoordinator
 from .helpers import async_get_blueprints
 
@@ -136,7 +137,7 @@ async def _process_config(hass: HomeAssistant, hass_config: ConfigType) -> None:
     coordinator_tasks: list[Coroutine[Any, Any, TriggerUpdateCoordinator]] = []
 
     for conf_section in hass_config[DOMAIN]:
-        if CONF_TRIGGER in conf_section:
+        if CONF_TRIGGERS in conf_section:
             coordinator_tasks.append(init_coordinator(hass, conf_section))
             continue
 
diff --git a/homeassistant/components/template/config.py b/homeassistant/components/template/config.py
index bce1d2764d7..5038114b8ab 100644
--- a/homeassistant/components/template/config.py
+++ b/homeassistant/components/template/config.py
@@ -3,6 +3,7 @@
 from collections.abc import Callable
 from contextlib import suppress
 import logging
+from typing import Any
 
 import voluptuous as vol
 
@@ -10,6 +11,7 @@ from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAI
 from homeassistant.components.blueprint import (
     BLUEPRINT_INSTANCE_FIELDS,
     is_blueprint_instance_config,
+    schemas as blueprint_schemas,
 )
 from homeassistant.components.button import DOMAIN as BUTTON_DOMAIN
 from homeassistant.components.cover import DOMAIN as COVER_DOMAIN
@@ -22,9 +24,15 @@ from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
 from homeassistant.components.weather import DOMAIN as WEATHER_DOMAIN
 from homeassistant.config import async_log_schema_error, config_without_domain
 from homeassistant.const import (
+    CONF_ACTION,
+    CONF_ACTIONS,
     CONF_BINARY_SENSORS,
+    CONF_CONDITION,
+    CONF_CONDITIONS,
     CONF_NAME,
     CONF_SENSORS,
+    CONF_TRIGGER,
+    CONF_TRIGGERS,
     CONF_UNIQUE_ID,
     CONF_VARIABLES,
 )
@@ -47,14 +55,7 @@ from . import (
     switch as switch_platform,
     weather as weather_platform,
 )
-from .const import (
-    CONF_ACTION,
-    CONF_CONDITION,
-    CONF_TRIGGER,
-    DOMAIN,
-    PLATFORMS,
-    TemplateConfig,
-)
+from .const import DOMAIN, PLATFORMS, TemplateConfig
 from .helpers import async_get_blueprints
 
 PACKAGE_MERGE_HINT = "list"
@@ -67,7 +68,7 @@ def ensure_domains_do_not_have_trigger_or_action(*keys: str) -> Callable[[dict],
     def validate(obj: dict):
         options = set(obj.keys())
         if found_domains := domains.intersection(options):
-            invalid = {CONF_TRIGGER, CONF_ACTION}
+            invalid = {CONF_TRIGGERS, CONF_ACTIONS}
             if found_invalid := invalid.intersection(set(obj.keys())):
                 raise vol.Invalid(
                     f"Unsupported option(s) found for domain {found_domains.pop()}, please remove ({', '.join(found_invalid)}) from your configuration",
@@ -78,13 +79,22 @@ def ensure_domains_do_not_have_trigger_or_action(*keys: str) -> Callable[[dict],
     return validate
 
 
-CONFIG_SECTION_SCHEMA = vol.Schema(
-    vol.All(
+def _backward_compat_schema(value: Any | None) -> Any:
+    """Backward compatibility for automations."""
+
+    value = cv.renamed(CONF_TRIGGER, CONF_TRIGGERS)(value)
+    value = cv.renamed(CONF_ACTION, CONF_ACTIONS)(value)
+    return cv.renamed(CONF_CONDITION, CONF_CONDITIONS)(value)
+
+
+CONFIG_SECTION_SCHEMA = vol.All(
+    _backward_compat_schema,
+    vol.Schema(
         {
             vol.Optional(CONF_UNIQUE_ID): cv.string,
-            vol.Optional(CONF_TRIGGER): cv.TRIGGER_SCHEMA,
-            vol.Optional(CONF_CONDITION): cv.CONDITIONS_SCHEMA,
-            vol.Optional(CONF_ACTION): cv.SCRIPT_SCHEMA,
+            vol.Optional(CONF_TRIGGERS): cv.TRIGGER_SCHEMA,
+            vol.Optional(CONF_CONDITIONS): cv.CONDITIONS_SCHEMA,
+            vol.Optional(CONF_ACTIONS): cv.SCRIPT_SCHEMA,
             vol.Optional(CONF_VARIABLES): cv.SCRIPT_VARIABLES_SCHEMA,
             vol.Optional(NUMBER_DOMAIN): vol.All(
                 cv.ensure_list, [number_platform.NUMBER_SCHEMA]
@@ -123,10 +133,14 @@ CONFIG_SECTION_SCHEMA = vol.Schema(
                 cv.ensure_list, [cover_platform.COVER_SCHEMA]
             ),
         },
-        ensure_domains_do_not_have_trigger_or_action(
-            BUTTON_DOMAIN, COVER_DOMAIN, LIGHT_DOMAIN
-        ),
-    )
+    ),
+    ensure_domains_do_not_have_trigger_or_action(
+        BUTTON_DOMAIN, COVER_DOMAIN, LIGHT_DOMAIN
+    ),
+)
+
+TEMPLATE_BLUEPRINT_SCHEMA = vol.All(
+    _backward_compat_schema, blueprint_schemas.BLUEPRINT_SCHEMA
 )
 
 TEMPLATE_BLUEPRINT_INSTANCE_SCHEMA = vol.Schema(
@@ -169,7 +183,7 @@ async def _async_resolve_blueprints(
             # house input results for template entities.  For Trigger based template entities
             # CONF_VARIABLES should not be removed because the variables are always
             # executed between the trigger and action.
-            if CONF_TRIGGER not in config and CONF_VARIABLES in config:
+            if CONF_TRIGGERS not in config and CONF_VARIABLES in config:
                 config[platform][CONF_VARIABLES] = config.pop(CONF_VARIABLES)
         raw_config = dict(config)
 
@@ -187,14 +201,14 @@ async def async_validate_config_section(
 
     validated_config = await _async_resolve_blueprints(hass, config)
 
-    if CONF_TRIGGER in validated_config:
-        validated_config[CONF_TRIGGER] = await async_validate_trigger_config(
-            hass, validated_config[CONF_TRIGGER]
+    if CONF_TRIGGERS in validated_config:
+        validated_config[CONF_TRIGGERS] = await async_validate_trigger_config(
+            hass, validated_config[CONF_TRIGGERS]
         )
 
-    if CONF_CONDITION in validated_config:
-        validated_config[CONF_CONDITION] = await async_validate_conditions_config(
-            hass, validated_config[CONF_CONDITION]
+    if CONF_CONDITIONS in validated_config:
+        validated_config[CONF_CONDITIONS] = await async_validate_conditions_config(
+            hass, validated_config[CONF_CONDITIONS]
         )
 
     return validated_config
diff --git a/homeassistant/components/template/const.py b/homeassistant/components/template/const.py
index f333d14797e..53c0fa3af13 100644
--- a/homeassistant/components/template/const.py
+++ b/homeassistant/components/template/const.py
@@ -1,22 +1,18 @@
 """Constants for the Template Platform Components."""
 
-from homeassistant.components.blueprint import BLUEPRINT_SCHEMA
 from homeassistant.const import Platform
 from homeassistant.helpers.typing import ConfigType
 
-CONF_ACTION = "action"
 CONF_ATTRIBUTE_TEMPLATES = "attribute_templates"
 CONF_ATTRIBUTES = "attributes"
 CONF_AVAILABILITY = "availability"
 CONF_AVAILABILITY_TEMPLATE = "availability_template"
-CONF_CONDITION = "condition"
 CONF_MAX = "max"
 CONF_MIN = "min"
 CONF_OBJECT_ID = "object_id"
 CONF_PICTURE = "picture"
 CONF_PRESS = "press"
 CONF_STEP = "step"
-CONF_TRIGGER = "trigger"
 CONF_TURN_OFF = "turn_off"
 CONF_TURN_ON = "turn_on"
 
@@ -41,8 +37,6 @@ PLATFORMS = [
     Platform.WEATHER,
 ]
 
-TEMPLATE_BLUEPRINT_SCHEMA = BLUEPRINT_SCHEMA
-
 
 class TemplateConfig(dict):
     """Dummy class to allow adding attributes."""
diff --git a/homeassistant/components/template/coordinator.py b/homeassistant/components/template/coordinator.py
index c11e9b6101b..a2823233336 100644
--- a/homeassistant/components/template/coordinator.py
+++ b/homeassistant/components/template/coordinator.py
@@ -5,7 +5,14 @@ import logging
 from typing import TYPE_CHECKING, Any, cast
 
 from homeassistant.components.blueprint import CONF_USE_BLUEPRINT
-from homeassistant.const import CONF_PATH, CONF_VARIABLES, EVENT_HOMEASSISTANT_START
+from homeassistant.const import (
+    CONF_ACTIONS,
+    CONF_CONDITIONS,
+    CONF_PATH,
+    CONF_TRIGGERS,
+    CONF_VARIABLES,
+    EVENT_HOMEASSISTANT_START,
+)
 from homeassistant.core import Context, CoreState, Event, HomeAssistant, callback
 from homeassistant.helpers import condition, discovery, trigger as trigger_helper
 from homeassistant.helpers.script import Script
@@ -14,7 +21,7 @@ from homeassistant.helpers.trace import trace_get
 from homeassistant.helpers.typing import ConfigType, TemplateVarsType
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 
-from .const import CONF_ACTION, CONF_CONDITION, CONF_TRIGGER, DOMAIN, PLATFORMS
+from .const import DOMAIN, PLATFORMS
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -84,17 +91,17 @@ class TriggerUpdateCoordinator(DataUpdateCoordinator):
 
     async def _attach_triggers(self, start_event: Event | None = None) -> None:
         """Attach the triggers."""
-        if CONF_ACTION in self.config:
+        if CONF_ACTIONS in self.config:
             self._script = Script(
                 self.hass,
-                self.config[CONF_ACTION],
+                self.config[CONF_ACTIONS],
                 self.name,
                 DOMAIN,
             )
 
-        if CONF_CONDITION in self.config:
+        if CONF_CONDITIONS in self.config:
             self._cond_func = await condition.async_conditions_from_config(
-                self.hass, self.config[CONF_CONDITION], _LOGGER, "template entity"
+                self.hass, self.config[CONF_CONDITIONS], _LOGGER, "template entity"
             )
 
         if start_event is not None:
@@ -107,7 +114,7 @@ class TriggerUpdateCoordinator(DataUpdateCoordinator):
 
         self._unsub_trigger = await trigger_helper.async_initialize_triggers(
             self.hass,
-            self.config[CONF_TRIGGER],
+            self.config[CONF_TRIGGERS],
             action,
             DOMAIN,
             self.name,
diff --git a/homeassistant/components/template/helpers.py b/homeassistant/components/template/helpers.py
index d74a4a4ed00..660227f65dc 100644
--- a/homeassistant/components/template/helpers.py
+++ b/homeassistant/components/template/helpers.py
@@ -8,7 +8,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import async_get_platforms
 from homeassistant.helpers.singleton import singleton
 
-from .const import DOMAIN, TEMPLATE_BLUEPRINT_SCHEMA
+from .const import DOMAIN
 from .entity import AbstractTemplateEntity
 
 DATA_BLUEPRINTS = "template_blueprints"
@@ -54,6 +54,9 @@ async def _reload_blueprint_templates(hass: HomeAssistant, blueprint_path: str)
 @callback
 def async_get_blueprints(hass: HomeAssistant) -> blueprint.DomainBlueprints:
     """Get template blueprints."""
+    # pylint: disable-next=import-outside-toplevel
+    from .config import TEMPLATE_BLUEPRINT_SCHEMA
+
     return blueprint.DomainBlueprints(
         hass,
         DOMAIN,
diff --git a/homeassistant/components/template/sensor.py b/homeassistant/components/template/sensor.py
index ca3736ebf76..508c8b2aed4 100644
--- a/homeassistant/components/template/sensor.py
+++ b/homeassistant/components/template/sensor.py
@@ -33,6 +33,8 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_SENSORS,
     CONF_STATE,
+    CONF_TRIGGER,
+    CONF_TRIGGERS,
     CONF_UNIQUE_ID,
     CONF_UNIT_OF_MEASUREMENT,
     CONF_VALUE_TEMPLATE,
@@ -53,12 +55,7 @@ from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util import dt as dt_util
 
 from . import TriggerUpdateCoordinator
-from .const import (
-    CONF_ATTRIBUTE_TEMPLATES,
-    CONF_AVAILABILITY_TEMPLATE,
-    CONF_OBJECT_ID,
-    CONF_TRIGGER,
-)
+from .const import CONF_ATTRIBUTE_TEMPLATES, CONF_AVAILABILITY_TEMPLATE, CONF_OBJECT_ID
 from .template_entity import (
     TEMPLATE_ENTITY_COMMON_SCHEMA,
     TemplateEntity,
@@ -132,7 +129,7 @@ LEGACY_SENSOR_SCHEMA = vol.All(
 
 def extra_validation_checks(val):
     """Run extra validation checks."""
-    if CONF_TRIGGER in val:
+    if CONF_TRIGGERS in val or CONF_TRIGGER in val:
         raise vol.Invalid(
             "You can only add triggers to template entities if they are defined under"
             " `template:`. See the template documentation for more information:"
@@ -170,6 +167,7 @@ PLATFORM_SCHEMA = vol.All(
     SENSOR_PLATFORM_SCHEMA.extend(
         {
             vol.Optional(CONF_TRIGGER): cv.match_all,  # to raise custom warning
+            vol.Optional(CONF_TRIGGERS): cv.match_all,  # to raise custom warning
             vol.Required(CONF_SENSORS): cv.schema_with_slug_keys(LEGACY_SENSOR_SCHEMA),
         }
     ),
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 64faf019567..b73aed1b8b9 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -115,6 +115,7 @@ SUN_EVENT_SUNRISE: Final = "sunrise"
 CONF_ABOVE: Final = "above"
 CONF_ACCESS_TOKEN: Final = "access_token"
 CONF_ACTION: Final = "action"
+CONF_ACTIONS: Final = "actions"
 CONF_ADDRESS: Final = "address"
 CONF_AFTER: Final = "after"
 CONF_ALIAS: Final = "alias"
diff --git a/tests/components/template/test_blueprint.py b/tests/components/template/test_blueprint.py
index 66630ecf739..43f2c310289 100644
--- a/tests/components/template/test_blueprint.py
+++ b/tests/components/template/test_blueprint.py
@@ -212,11 +212,16 @@ async def test_reload_template_when_blueprint_changes(hass: HomeAssistant) -> No
     assert not_inverted.state == "on"
 
 
+@pytest.mark.parametrize(
+    ("blueprint"),
+    ["test_event_sensor.yaml", "test_event_sensor_legacy_schema.yaml"],
+)
 async def test_trigger_event_sensor(
-    hass: HomeAssistant, device_registry: dr.DeviceRegistry
+    hass: HomeAssistant,
+    device_registry: dr.DeviceRegistry,
+    blueprint: str,
 ) -> None:
     """Test event sensor blueprint."""
-    blueprint = "test_event_sensor.yaml"
     assert await async_setup_component(
         hass,
         "template",
diff --git a/tests/components/template/test_sensor.py b/tests/components/template/test_sensor.py
index e7af5296d4e..56eaa120b20 100644
--- a/tests/components/template/test_sensor.py
+++ b/tests/components/template/test_sensor.py
@@ -2303,6 +2303,61 @@ async def test_trigger_conditional_action(hass: HomeAssistant) -> None:
     assert len(events) == 1
 
 
+@pytest.mark.parametrize("trigger_field", ["trigger", "triggers"])
+@pytest.mark.parametrize("condition_field", ["condition", "conditions"])
+@pytest.mark.parametrize("action_field", ["action", "actions"])
+async def test_legacy_and_new_config_schema(
+    hass: HomeAssistant, trigger_field: str, condition_field: str, action_field: str
+) -> None:
+    """Tests that both old and new config schema (singular -> plural) work."""
+
+    assert await async_setup_component(
+        hass,
+        "template",
+        {
+            "template": [
+                {
+                    "unique_id": "listening-test-event",
+                    f"{trigger_field}": {
+                        "platform": "event",
+                        "event_type": "beer_event",
+                    },
+                    f"{condition_field}": [
+                        {
+                            "condition": "template",
+                            "value_template": "{{ trigger.event.data.beer >= 42 }}",
+                        }
+                    ],
+                    f"{action_field}": [
+                        {"event": "test_event_by_action"},
+                    ],
+                    "sensor": [
+                        {
+                            "name": "Unimportant",
+                            "state": "Uninteresting",
+                        }
+                    ],
+                },
+            ],
+        },
+    )
+
+    await hass.async_block_till_done()
+
+    event = "test_event_by_action"
+    events = async_capture_events(hass, event)
+
+    hass.bus.async_fire("beer_event", {"beer": 1})
+    await hass.async_block_till_done()
+
+    assert len(events) == 0
+
+    hass.bus.async_fire("beer_event", {"beer": 42})
+    await hass.async_block_till_done()
+
+    assert len(events) == 1
+
+
 async def test_device_id(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,
diff --git a/tests/testing_config/blueprints/template/test_event_sensor.yaml b/tests/testing_config/blueprints/template/test_event_sensor.yaml
index 8b615eb90ba..2ce8519c8e9 100644
--- a/tests/testing_config/blueprints/template/test_event_sensor.yaml
+++ b/tests/testing_config/blueprints/template/test_event_sensor.yaml
@@ -14,7 +14,7 @@ blueprint:
       description: The event_data for the event trigger
       selector:
         object:
-trigger:
+triggers:
   - trigger: event
     event_type: !input event_type
     event_data: !input event_data
diff --git a/tests/testing_config/blueprints/template/test_event_sensor_legacy_schema.yaml b/tests/testing_config/blueprints/template/test_event_sensor_legacy_schema.yaml
new file mode 100644
index 00000000000..8b615eb90ba
--- /dev/null
+++ b/tests/testing_config/blueprints/template/test_event_sensor_legacy_schema.yaml
@@ -0,0 +1,27 @@
+blueprint:
+  name: Create Sensor from Event
+  description: Creates a timestamp sensor from an event
+  domain: template
+  source_url: https://github.com/home-assistant/core/blob/dev/homeassistant/components/template/blueprints/event_sensor.yaml
+  input:
+    event_type:
+      name: Name of the event_type
+      description: The event_type for the event trigger
+      selector:
+        text:
+    event_data:
+      name: The data for the event
+      description: The event_data for the event trigger
+      selector:
+        object:
+trigger:
+  - trigger: event
+    event_type: !input event_type
+    event_data: !input event_data
+variables:
+  event_data: "{{ trigger.event.data }}"
+sensor:
+  state: "{{ now() }}"
+  device_class: timestamp
+  attributes:
+    data: "{{ event_data }}"