diff --git a/src/widgets/widgets/qlineedit_p.cpp b/src/widgets/widgets/qlineedit_p.cpp
index 7c5ba79cb6..e1c7a4e280 100644
--- a/src/widgets/widgets/qlineedit_p.cpp
+++ b/src/widgets/widgets/qlineedit_p.cpp
@@ -533,6 +533,17 @@ QWidget *QLineEditPrivate::addAction(QAction *newAction, QAction *before, QLineE
         return nullptr;
 #endif
     }
+
+    // QTBUG-59957: clear button should be the leftmost action.
+    if (!before && !(flags & SideWidgetClearButton) && position == QLineEdit::TrailingPosition) {
+        for (const SideWidgetEntry &e : trailingSideWidgets) {
+            if (e.flags & SideWidgetClearButton) {
+                before = e.action;
+                break;
+            }
+        }
+    }
+
     // If there is a 'before' action, it takes preference
 
     // There's a bug in GHS compiler that causes internal error on the following code.
diff --git a/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp b/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
index 330ce3a836..b7628b30e9 100644
--- a/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
+++ b/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
@@ -310,6 +310,7 @@ private slots:
 
     void shortcutOverrideOnReadonlyLineEdit_data();
     void shortcutOverrideOnReadonlyLineEdit();
+    void QTBUG59957_clearButtonLeftmostAction();
 
 protected slots:
     void editingFinished();
@@ -4612,5 +4613,27 @@ void tst_QLineEdit::shortcutOverrideOnReadonlyLineEdit()
     QCOMPARE(spy.count(), activationCount);
 }
 
+void tst_QLineEdit::QTBUG59957_clearButtonLeftmostAction()
+{
+    QLineEdit lineEdit;
+    lineEdit.setClearButtonEnabled(true);
+
+    auto clearButton = lineEdit.findChild<QLineEditIconButton *>();
+    QVERIFY(clearButton);
+
+    QPixmap pixmap(16, 16);
+    lineEdit.addAction(QIcon(pixmap), QLineEdit::TrailingPosition);
+    lineEdit.addAction(QIcon(pixmap), QLineEdit::TrailingPosition);
+
+    lineEdit.show();
+
+    const auto buttons = lineEdit.findChildren<QLineEditIconButton *>();
+    for (const auto button : buttons) {
+        if (button == clearButton)
+            continue;
+        QVERIFY(clearButton->x() < button->x());
+    }
+}
+
 QTEST_MAIN(tst_QLineEdit)
 #include "tst_qlineedit.moc"