diff --git a/src/WSEvents.cpp b/src/WSEvents.cpp
index 5be8e9eb..e6e35602 100644
--- a/src/WSEvents.cpp
+++ b/src/WSEvents.cpp
@@ -1505,6 +1505,25 @@ void WSEvents::OnStudioModeSwitched(bool checked) {
 	broadcastUpdate("StudioModeSwitched", data);
 }
 
+/**
+ * A custom broadcast message was received
+ *
+ * @param {String} `realm` Identifier provided by the sender
+ * @param {Object} `data` User-defined data
+ *
+ * @api events
+ * @name BroadcastCustomMessage
+ * @category general
+ * @since 4.7.0
+ */
+void WSEvents::OnBroadcastCustomMessage(QString realm, obs_data_t* data) {
+	OBSDataAutoRelease broadcastData = obs_data_create();
+	obs_data_set_string(broadcastData, "realm", realm.toUtf8().constData());
+	obs_data_set_obj(broadcastData, "data", data);
+
+	broadcastUpdate("BroadcastCustomMessage", broadcastData);
+}
+
 /**
  * @typedef {Object} `OBSStats`
  * @property {double} `fps` Current framerate.
diff --git a/src/WSEvents.h b/src/WSEvents.h
index 8a6bbec4..af6e2da3 100644
--- a/src/WSEvents.h
+++ b/src/WSEvents.h
@@ -49,6 +49,8 @@ public:
 	const char* GetRecordingTimecode();
 	obs_data_t* GetStats();
 
+	void OnBroadcastCustomMessage(QString realm, obs_data_t* data);
+
 	bool HeartbeatIsActive;
 
 private slots:
diff --git a/src/WSRequestHandler.cpp b/src/WSRequestHandler.cpp
index 53d43fc1..4af1ad14 100644
--- a/src/WSRequestHandler.cpp
+++ b/src/WSRequestHandler.cpp
@@ -36,6 +36,8 @@ QHash<QString, HandlerResponse(*)(WSRequestHandler*)> WSRequestHandler::messageM
 	{ "SetFilenameFormatting", WSRequestHandler::HandleSetFilenameFormatting },
 	{ "GetFilenameFormatting", WSRequestHandler::HandleGetFilenameFormatting },
 
+	{ "BroadcastCustomMessage", WSRequestHandler::HandleBroadcastCustomMessage },
+
 	{ "SetCurrentScene", WSRequestHandler::HandleSetCurrentScene },
 	{ "GetCurrentScene", WSRequestHandler::HandleGetCurrentScene },
 	{ "GetSceneList", WSRequestHandler::HandleGetSceneList },
diff --git a/src/WSRequestHandler.h b/src/WSRequestHandler.h
index b2eefa3d..4dea020b 100644
--- a/src/WSRequestHandler.h
+++ b/src/WSRequestHandler.h
@@ -74,6 +74,8 @@ class WSRequestHandler : public QObject {
 		static HandlerResponse HandleSetFilenameFormatting(WSRequestHandler* req);
 		static HandlerResponse HandleGetFilenameFormatting(WSRequestHandler* req);
 
+		static HandlerResponse HandleBroadcastCustomMessage(WSRequestHandler* req);
+
 		static HandlerResponse HandleSetCurrentScene(WSRequestHandler* req);
 		static HandlerResponse HandleGetCurrentScene(WSRequestHandler* req);
 		static HandlerResponse HandleGetSceneList(WSRequestHandler* req);
diff --git a/src/WSRequestHandler_General.cpp b/src/WSRequestHandler_General.cpp
index 0ca572af..59c6bedf 100644
--- a/src/WSRequestHandler_General.cpp
+++ b/src/WSRequestHandler_General.cpp
@@ -231,6 +231,40 @@ HandlerResponse WSRequestHandler::HandleGetStats(WSRequestHandler* req) {
 	return req->SendOKResponse(response);
 }
 
+/**
+ * Broadcast custom message to all connected WebSocket clients
+ *
+ * @param {String} `realm` Identifier to be choosen by the client
+ * @param {Object} `data` User-defined data
+ *
+ * @api general
+ * @name BroadcastCustomMessage
+ * @category general
+ * @since 4.7.0
+ */
+HandlerResponse WSRequestHandler::HandleBroadcastCustomMessage(WSRequestHandler* req) {
+	if (!req->hasField("realm") || !req->hasField("data")) {
+		return req->SendErrorResponse("missing request parameters");
+	}
+
+	QString realm = obs_data_get_string(req->data, "realm");
+	OBSDataAutoRelease data = obs_data_get_obj(req->data, "data");
+
+	if (realm.isEmpty()) {
+		return req->SendErrorResponse("realm not specified!");
+	}
+
+	if (!data) {
+		return req->SendErrorResponse("data not specified!");
+	}
+
+	auto events = GetEventsSystem();
+	events->OnBroadcastCustomMessage(realm, data);
+
+	return req->SendOKResponse();
+}
+
+
 /**
  * Get basic OBS video information
  *