diff --git a/autotests/client/test_wayland_connection_thread.cpp b/autotests/client/test_wayland_connection_thread.cpp
--- a/autotests/client/test_wayland_connection_thread.cpp
+++ b/autotests/client/test_wayland_connection_thread.cpp
@@ -78,7 +78,9 @@
 
 void TestWaylandConnectionThread::testInitConnectionNoThread()
 {
+    QVERIFY(KWayland::Client::ConnectionThread::connections().isEmpty());
     QScopedPointer<KWayland::Client::ConnectionThread> connection(new KWayland::Client::ConnectionThread);
+    QVERIFY(KWayland::Client::ConnectionThread::connections().contains(connection.data()));
     QCOMPARE(connection->socketName(), QStringLiteral("wayland-0"));
     connection->setSocketName(s_socketName);
     QCOMPARE(connection->socketName(), s_socketName);
@@ -90,6 +92,9 @@
     QCOMPARE(connectedSpy.count(), 1);
     QCOMPARE(failedSpy.count(), 0);
     QVERIFY(connection->display());
+
+    connection.reset();
+    QVERIFY(KWayland::Client::ConnectionThread::connections().isEmpty());
 }
 
 void TestWaylandConnectionThread::testConnectionFailure()
diff --git a/src/client/connection_thread.h b/src/client/connection_thread.h
--- a/src/client/connection_thread.h
+++ b/src/client/connection_thread.h
@@ -21,6 +21,7 @@
 #define WAYLAND_CONNECTION_THREAD_H
 
 #include <QObject>
+#include <QVector>
 
 #include <KWayland/Client/kwaylandclient_export.h>
 
@@ -198,6 +199,12 @@
      **/
     int errorCode() const;
 
+    /**
+     * @returns all connections created in this application
+     * @since 5.37
+     **/
+    static QVector<ConnectionThread*> connections();
+
 public Q_SLOTS:
     /**
      * Initializes the connection in an asynchronous way.
diff --git a/src/client/connection_thread.cpp b/src/client/connection_thread.cpp
--- a/src/client/connection_thread.cpp
+++ b/src/client/connection_thread.cpp
@@ -25,6 +25,8 @@
 #include <QDebug>
 #include <QDir>
 #include <QFileSystemWatcher>
+#include <QMutex>
+#include <QMutexLocker>
 #include <QSocketNotifier>
 #include <qpa/qplatformnativeinterface.h>
 // Wayland
@@ -55,22 +57,36 @@
     bool foreign = false;
     QMetaObject::Connection eventDispatcherConnection;
     int error = 0;
+    static QVector<ConnectionThread*> connections;
+    static QMutex mutex;
 private:
     ConnectionThread *q;
 };
 
+QVector<ConnectionThread*> ConnectionThread::Private::connections = QVector<ConnectionThread*>{};
+QMutex ConnectionThread::Private::mutex = QMutex(QMutex::Recursive);
+
+
 ConnectionThread::Private::Private(ConnectionThread *q)
     : socketName(QString::fromUtf8(qgetenv("WAYLAND_DISPLAY")))
     , runtimeDir(QString::fromUtf8(qgetenv("XDG_RUNTIME_DIR")))
     , q(q)
 {
     if (socketName.isEmpty()) {
         socketName = QStringLiteral("wayland-0");
     }
+    {
+        QMutexLocker lock(&mutex);
+        connections << q;
+    }
 }
 
 ConnectionThread::Private::~Private()
 {
+    {
+        QMutexLocker lock(&mutex);
+        connections.removeOne(q);
+    }
     if (display && !foreign) {
         wl_display_flush(display);
         wl_display_disconnect(display);
@@ -280,5 +296,10 @@
     return d->error;
 }
 
+QVector<ConnectionThread*> ConnectionThread::connections()
+{
+    return Private::connections;
+}
+
 }
 }