diff --git a/changelog.d/15034.feature b/changelog.d/15034.feature
new file mode 100644
index 000000000000..34f320da9200
--- /dev/null
+++ b/changelog.d/15034.feature
@@ -0,0 +1 @@
+Allow Synapse to use a specific Redis [logical database](https://redis.io/commands/select/) in worker-mode deployments.
diff --git a/contrib/docker_compose_workers/README.md b/contrib/docker_compose_workers/README.md
index bdd3dd32e07f..d3cdfe5614bb 100644
--- a/contrib/docker_compose_workers/README.md
+++ b/contrib/docker_compose_workers/README.md
@@ -68,6 +68,7 @@ redis:
   enabled: true
   host: redis
   port: 6379
+  # dbid:  <redis_logical_db_id>
   # password: <secret_password>  
 ```
 
diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md
index 2883f76a26cd..75483bfb125a 100644
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
@@ -3927,6 +3927,9 @@ This setting has the following sub-options:
 * `host` and `port`: Optional host and port to use to connect to redis. Defaults to
    localhost and 6379
 * `password`: Optional password if configured on the Redis instance.
+* `dbid`: Optional redis dbid if needs to connect to specific redis logical db.
+
+  _Added in Synapse 1.78.0._
 
 Example configuration:
 ```yaml
@@ -3935,6 +3938,7 @@ redis:
   host: localhost
   port: 6379
   password: <secret_password>
+  dbid: <dbid>
 ```
 ---
 ## Individual worker configuration
diff --git a/synapse/config/redis.py b/synapse/config/redis.py
index b42dd2e93a39..e6a75be43429 100644
--- a/synapse/config/redis.py
+++ b/synapse/config/redis.py
@@ -33,4 +33,5 @@ def read_config(self, config: JsonDict, **kwargs: Any) -> None:
 
         self.redis_host = redis_config.get("host", "localhost")
         self.redis_port = redis_config.get("port", 6379)
+        self.redis_dbid = redis_config.get("dbid", None)
         self.redis_password = redis_config.get("password")
diff --git a/synapse/server.py b/synapse/server.py
index efc6b5f895da..e5a347524763 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -827,6 +827,7 @@ def get_outbound_redis_connection(self) -> "ConnectionHandler":
             hs=self,
             host=self.config.redis.redis_host,
             port=self.config.redis.redis_port,
+            dbid=self.config.redis.redis_dbid,
             password=self.config.redis.redis_password,
             reconnect=True,
         )