To print the list of actors that are running in the actor system, you can add following scheduler that will print actor path every 10 seconds: import akka.actor.{Actor, ActorIdentity, ActorLogging, ActorRef, Cancellable, Props} class TestActor extends Actor with ActorLogging { private var scheduler: Cancellable = _ @scala.throws[Exception](classOf[Exception]) override def preStart(): Unit = { import scala.concurrent.duration._ scheduler = context.system.scheduler.schedule( initialDelay = 0 seconds, interval = 10 seconds, receiver = self, message = ActorIdentity("", Some(self)) ) } @scala.throws[IOException](classOf[IOException]) override def postStop() = { scheduler.cancel } override def receive = { case ActorIdentity(_, Some(ref)) => log.info(ref.path.toString) } }