diff --git a/src/xrt/include/xrt/xrt_session.h b/src/xrt/include/xrt/xrt_session.h
index df4fe8f1f..aed5321aa 100644
--- a/src/xrt/include/xrt/xrt_session.h
+++ b/src/xrt/include/xrt/xrt_session.h
@@ -61,6 +61,9 @@ enum xrt_session_event_type
 
 	//! The passthrough state of the session has changed
 	XRT_SESSION_EVENT_PASSTHRU_STATE_CHANGE = 8,
+
+	// ! The visibility mask of given view has changed
+	XRT_SESSION_EVENT_VISIBILITY_MASK_CHANGE = 9
 };
 
 /*!
@@ -164,6 +167,15 @@ struct xrt_session_event_passthrough_state_change
 	enum xrt_passthrough_state state;
 };
 
+/*!
+ *  Visibility mask changed event
+ */
+struct xrt_session_event_visibility_mask_change
+{
+	enum xrt_session_event_type type;
+	uint32_t view_index;
+};
+
 /*!
  * Union of all session events, used to return multiple events through one call.
  * Each event struct must start with a @ref xrt_session_event_type field.
@@ -181,6 +193,7 @@ union xrt_session_event {
 	struct xrt_session_event_reference_space_change_pending ref_change;
 	struct xrt_session_event_perf_change performance;
 	struct xrt_session_event_passthrough_state_change passthru;
+	struct xrt_session_event_visibility_mask_change mask_change;
 };
 
 /*!
diff --git a/src/xrt/state_trackers/oxr/oxr_event.c b/src/xrt/state_trackers/oxr/oxr_event.c
index d9b3dc8dc..5e79430c9 100644
--- a/src/xrt/state_trackers/oxr/oxr_event.c
+++ b/src/xrt/state_trackers/oxr/oxr_event.c
@@ -318,6 +318,31 @@ oxr_event_push_XrEventDataPassthroughStateChangedFB(struct oxr_logger *log,
 }
 #endif // OXR_HAVE_FB_passthrough
 
+#ifdef OXR_HAVE_KHR_visibility_mask
+XrResult
+oxr_event_push_XrEventDataVisibilityMaskChangedKHR(struct oxr_logger *log,
+                                                   struct oxr_session *sess,
+                                                   XrViewConfigurationType viewConfigurationType,
+                                                   uint32_t viewIndex)
+{
+	struct oxr_instance *inst = sess->sys->inst;
+	XrEventDataVisibilityMaskChangedKHR *changed;
+	struct oxr_event *event = NULL;
+
+	ALLOC(log, inst, &event, &changed);
+	changed->type = XR_TYPE_EVENT_DATA_VISIBILITY_MASK_CHANGED_KHR;
+	changed->session = oxr_session_to_openxr(sess);
+	changed->viewConfigurationType = viewConfigurationType;
+	changed->viewIndex = viewIndex;
+	event->result = XR_SUCCESS;
+	lock(inst);
+	push(inst, event);
+	unlock(inst);
+
+	return XR_SUCCESS;
+}
+#endif // OXR_HAVE_KHR_visibility_mask
+
 XrResult
 oxr_event_remove_session_events(struct oxr_logger *log, struct oxr_session *sess)
 {
diff --git a/src/xrt/state_trackers/oxr/oxr_objects.h b/src/xrt/state_trackers/oxr/oxr_objects.h
index 9eb3485aa..9ee873756 100644
--- a/src/xrt/state_trackers/oxr/oxr_objects.h
+++ b/src/xrt/state_trackers/oxr/oxr_objects.h
@@ -824,6 +824,12 @@ oxr_session_get_visibility_mask(struct oxr_logger *log,
                                 XrVisibilityMaskTypeKHR visibilityMaskType,
                                 uint32_t viewIndex,
                                 XrVisibilityMaskKHR *visibilityMask);
+
+XrResult
+oxr_event_push_XrEventDataVisibilityMaskChangedKHR(struct oxr_logger *log,
+                                                   struct oxr_session *sess,
+                                                   XrViewConfigurationType viewConfigurationType,
+                                                   uint32_t viewIndex);
 #endif // OXR_HAVE_KHR_visibility_mask
 
 #ifdef OXR_HAVE_EXT_performance_settings
diff --git a/src/xrt/state_trackers/oxr/oxr_session.c b/src/xrt/state_trackers/oxr/oxr_session.c
index 09cc1cc22..dffadc1f6 100644
--- a/src/xrt/state_trackers/oxr/oxr_session.c
+++ b/src/xrt/state_trackers/oxr/oxr_session.c
@@ -403,6 +403,12 @@ oxr_session_poll(struct oxr_logger *log, struct oxr_session *sess)
 			    log, sess, xrt_to_passthrough_state_flags(xse.passthru.state));
 #endif // OXR_HAVE_FB_passthrough
 			break;
+		case XRT_SESSION_EVENT_VISIBILITY_MASK_CHANGE:
+#ifdef OXR_HAVE_KHR_visibility_mask
+			oxr_event_push_XrEventDataVisibilityMaskChangedKHR(log, sess, sess->sys->view_config_type,
+			                                                   xse.mask_change.view_index);
+#endif // OXR_HAVE_KHR_visibility_mask
+			break;
 		default: U_LOG_W("unhandled event type! %d", xse.type); break;
 		}
 	}