diff --git a/internal/services/services.go b/internal/services/services.go
index 23f123c..e8a38b8 100644
--- a/internal/services/services.go
+++ b/internal/services/services.go
@@ -26,6 +26,7 @@ func BuildService[
 		Scene |
 		Script |
 		TTS |
+		Timer |
 		Vacuum |
 		ZWaveJS,
 ](conn *ws.WebsocketWriter) *T {
diff --git a/internal/services/timer.go b/internal/services/timer.go
new file mode 100644
index 0000000..561271f
--- /dev/null
+++ b/internal/services/timer.go
@@ -0,0 +1,69 @@
+package services
+
+import (
+	ws "saml.dev/gome-assistant/internal/websocket"
+)
+
+/* Structs */
+
+type Timer struct {
+	conn *ws.WebsocketWriter
+}
+
+/* Public API */
+
+// See https://www.home-assistant.io/integrations/timer/#action-timerstart
+func (t Timer) Start(entityId string, duration string) error {
+	req := NewBaseServiceRequest(entityId)
+	req.Domain = "timer"
+	req.Service = "start"
+	req.ServiceData = map[string]any{
+		"duration": duration,
+	}
+
+	return t.conn.WriteMessage(req)
+}
+
+// See https://www.home-assistant.io/integrations/timer/#action-timerstart
+func (t Timer) Change(entityId string, duration string) error {
+	req := NewBaseServiceRequest(entityId)
+	req.Domain = "timer"
+	req.Service = "change"
+	req.ServiceData = map[string]any{
+		"duration": duration,
+	}
+
+	return t.conn.WriteMessage(req)
+}
+
+// See https://www.home-assistant.io/integrations/timer/#action-timerpause
+func (t Timer) Pause(entityId string) error {
+	req := NewBaseServiceRequest(entityId)
+	req.Domain = "timer"
+	req.Service = "pause"
+	return t.conn.WriteMessage(req)
+}
+
+// See https://www.home-assistant.io/integrations/timer/#action-timercancel
+func (t Timer) Cancel() error {
+	req := NewBaseServiceRequest("")
+	req.Domain = "timer"
+	req.Service = "cancel"
+	return t.conn.WriteMessage(req)
+}
+
+// See https://www.home-assistant.io/integrations/timer/#action-timerfinish
+func (t Timer) Finish(entityId string) error {
+	req := NewBaseServiceRequest(entityId)
+	req.Domain = "timer"
+	req.Service = "finish"
+	return t.conn.WriteMessage(req)
+}
+
+// See https://www.home-assistant.io/integrations/timer/#action-timerreload
+func (t Timer) Reload() error {
+	req := NewBaseServiceRequest("")
+	req.Domain = "timer"
+	req.Service = "reload"
+	return t.conn.WriteMessage(req)
+}
diff --git a/service.go b/service.go
index 8224743..bb6721c 100644
--- a/service.go
+++ b/service.go
@@ -25,6 +25,7 @@ type Service struct {
 	Number            *services.Number
 	Scene             *services.Scene
 	Script            *services.Script
+	Timer             *services.Timer
 	TTS               *services.TTS
 	Vacuum            *services.Vacuum
 	ZWaveJS           *services.ZWaveJS
@@ -51,6 +52,7 @@ func newService(conn *ws.WebsocketWriter) *Service {
 		Number:            services.BuildService[services.Number](conn),
 		Scene:             services.BuildService[services.Scene](conn),
 		Script:            services.BuildService[services.Script](conn),
+		Timer:             services.BuildService[services.Timer](conn),
 		TTS:               services.BuildService[services.TTS](conn),
 		Vacuum:            services.BuildService[services.Vacuum](conn),
 		ZWaveJS:           services.BuildService[services.ZWaveJS](conn),