diff --git a/.github/workflows/scala3-build.yml b/.github/workflows/scala3-build.yml
index 48a85f9597..24d2f4f2c0 100644
--- a/.github/workflows/scala3-build.yml
+++ b/.github/workflows/scala3-build.yml
@@ -30,7 +30,7 @@ jobs:
           sbt -jvm-opts .jvmopts-ci \
             -Dakka.build.scalaVersion=3.0 \
             -Dakka.test.multi-in-test=false \
-            -Dakka.test.tags.exclude=performance,timing,long-running \
+            -Dakka.test.tags.exclude=performance,timing,long-running,gh-exclude \
             akka-actor-tests/test \
             akka-actor-testkit-typed/test \
             akka-actor-typed/compile \
diff --git a/akka-actor-tests/src/test/scala/akka/event/EventStreamSpec.scala b/akka-actor-tests/src/test/scala/akka/event/EventStreamSpec.scala
index 374eeb2089..f60a3ac36e 100644
--- a/akka-actor-tests/src/test/scala/akka/event/EventStreamSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/event/EventStreamSpec.scala
@@ -10,7 +10,7 @@ import com.typesafe.config.ConfigFactory
 import language.postfixOps
 
 import akka.actor._
-import akka.testkit.{ AkkaSpec, TestProbe }
+import akka.testkit.{ AkkaSpec, GHExcludeTest, TestProbe }
 
 object EventStreamSpec {
 
@@ -315,7 +315,8 @@ class EventStreamSpec extends AkkaSpec(EventStreamSpec.config) {
       }
     }
 
-    "unsubscribe the actor, when it subscribes already in terminated state" in {
+    // Excluded in GH Actions: https://github.com/akka/akka/issues/30460
+    "unsubscribe the actor, when it subscribes already in terminated state" taggedAs GHExcludeTest in {
       val sys = ActorSystem("EventStreamSpecUnsubscribeTerminated", configUnhandledWithDebug)
 
       try {
diff --git a/akka-actor-tests/src/test/scala/akka/io/UdpConnectedIntegrationSpec.scala b/akka-actor-tests/src/test/scala/akka/io/UdpConnectedIntegrationSpec.scala
index f27b46396d..a3e67a066e 100644
--- a/akka-actor-tests/src/test/scala/akka/io/UdpConnectedIntegrationSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/io/UdpConnectedIntegrationSpec.scala
@@ -10,6 +10,7 @@ import scala.concurrent.duration._
 
 import akka.actor.ActorRef
 import akka.testkit.AkkaSpec
+import akka.testkit.GHExcludeTest
 import akka.testkit.ImplicitSender
 import akka.testkit.SocketUtil.temporaryServerAddresses
 import akka.testkit.TestProbe
@@ -125,7 +126,8 @@ class UdpConnectedIntegrationSpec extends AkkaSpec("""
     }
 
     // #26903
-    "be able to send and receive when server goes away (and comes back)" in {
+    // Excluded in GH Actions: https://github.com/akka/akka/issues/30462
+    "be able to send and receive when server goes away (and comes back)" taggedAs GHExcludeTest in {
       val addresses = temporaryServerAddresses(2, udp = true)
       val serverAddress = addresses(0)
       val clientAddress = addresses(1)
diff --git a/akka-actor-typed-tests/src/test/scala/akka/actor/typed/pubsub/LocalPubSubSpec.scala b/akka-actor-typed-tests/src/test/scala/akka/actor/typed/pubsub/LocalPubSubSpec.scala
index 8934f6353f..ef6f647770 100644
--- a/akka-actor-typed-tests/src/test/scala/akka/actor/typed/pubsub/LocalPubSubSpec.scala
+++ b/akka-actor-typed-tests/src/test/scala/akka/actor/typed/pubsub/LocalPubSubSpec.scala
@@ -8,6 +8,7 @@ import scala.concurrent.duration._
 
 import org.scalatest.wordspec.AnyWordSpecLike
 
+import akka.testkit.GHExcludeTest
 import akka.actor.testkit.typed.scaladsl.LogCapturing
 import akka.actor.testkit.typed.scaladsl.LoggingTestKit
 import akka.actor.testkit.typed.scaladsl.ScalaTestWithActorTestKit
@@ -17,7 +18,8 @@ class LocalPubSubSpec extends ScalaTestWithActorTestKit with AnyWordSpecLike wit
 
   "A pub-sub topic running locally" must {
 
-    "publish to all local subscriber actors of a topic" in {
+    // Excluded in GH Actions: https://github.com/akka/akka/issues/30466
+    "publish to all local subscriber actors of a topic" taggedAs GHExcludeTest in {
       val fruitTopic =
         LoggingTestKit.debug("Topic list updated").withCheckExcess(false).expect {
           testKit.spawn(Topic[String]("fruit"))
diff --git a/akka-stream-tests/src/test/scala/akka/stream/scaladsl/HubSpec.scala b/akka-stream-tests/src/test/scala/akka/stream/scaladsl/HubSpec.scala
index 3d0c290888..844f7e8769 100644
--- a/akka-stream-tests/src/test/scala/akka/stream/scaladsl/HubSpec.scala
+++ b/akka-stream-tests/src/test/scala/akka/stream/scaladsl/HubSpec.scala
@@ -17,7 +17,7 @@ import akka.stream.testkit.Utils.TE
 import akka.stream.testkit.scaladsl.StreamTestKit._
 import akka.stream.testkit.scaladsl.TestSink
 import akka.stream.testkit.scaladsl.TestSource
-import akka.testkit.EventFilter
+import akka.testkit.{ EventFilter, GHExcludeTest }
 
 class HubSpec extends StreamSpec {
 
@@ -199,7 +199,8 @@ class HubSpec extends StreamSpec {
       downstream.expectComplete()
     }
 
-    "immediately cancel new producers while draining" in assertAllStagesStopped {
+    // Excluded in GH Actions: https://github.com/akka/akka/issues/30464
+    "immediately cancel new producers while draining" taggedAs GHExcludeTest in assertAllStagesStopped {
       val downstream = TestSubscriber.probe[Int]()
       val (sink, draining) =
         MergeHub.sourceWithDraining[Int](16).take(20).toMat(Sink.fromSubscriber(downstream))(Keep.left).run()
diff --git a/akka-testkit/src/test/scala/akka/testkit/TestTags.scala b/akka-testkit/src/test/scala/akka/testkit/TestTags.scala
index 591a520aba..5fe665b94f 100644
--- a/akka-testkit/src/test/scala/akka/testkit/TestTags.scala
+++ b/akka-testkit/src/test/scala/akka/testkit/TestTags.scala
@@ -9,3 +9,5 @@ import org.scalatest.Tag
 object TimingTest extends Tag("timing")
 object LongRunningTest extends Tag("long-running")
 object PerformanceTest extends Tag("performance")
+
+object GHExcludeTest extends Tag("gh-exclude")