diff --git a/core/lib/Drupal/Core/Routing/RouteProvider.php b/core/lib/Drupal/Core/Routing/RouteProvider.php
index 534670f8de..0077724ba3 100644
--- a/core/lib/Drupal/Core/Routing/RouteProvider.php
+++ b/core/lib/Drupal/Core/Routing/RouteProvider.php
@@ -209,6 +209,24 @@ public function getRouteByName($name) {
     return reset($routes);
   }

+  /**
+   * Determines if a route exists by name.
+   *
+   * @param string $name
+   *   The name of the route to check.
+   *
+   * @return bool
+   *   Whether a route with that route name exists.
+   */
+  public function routeExists($name) : bool {
+
+    if (empty($name) || !is_string($name)) {
+      return FALSE;
+    }
+
+    return (count($this->getRoutesByNames([$name])) === 1);
+  }
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/lib/Drupal/Core/Routing/RouteProviderInterface.php b/core/lib/Drupal/Core/Routing/RouteProviderInterface.php
index 5bfc659eef..becdc0d754 100644
--- a/core/lib/Drupal/Core/Routing/RouteProviderInterface.php
+++ b/core/lib/Drupal/Core/Routing/RouteProviderInterface.php
@@ -77,6 +77,17 @@ public function getRouteByName($name);
    */
   public function getRoutesByNames($names);

+  /**
+   * Determines if a route exists by name.
+   *
+   * @param string $name
+   *   The name of the route to check.
+   *
+   * @return bool
+   *   Whether a route with that route name exists.
+   */
+  public function routeExists($name);
+
   /**
    * Get all routes which match a certain pattern.
    *
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php b/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
index 350e400a68..77afa2fc15 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
@@ -639,7 +639,7 @@ public function testRouteCaching() {
   }

   /**
-   * Tests RouteProvider::getRouteByName() & RouteProvider::getRoutesByNames().
+   * Tests RouteProvider::getRouteByName(), RouteProvider::getRoutesByNames(), and RouteProvider::routeExists().
    */
   public function testRouteByName() {
     $connection = Database::getConnection();
@@ -651,6 +651,14 @@ public function testRouteByName() {
     $dumper->addRoutes($this->fixtures->sampleRouteCollection());
     $dumper->dump();

+    $emptyRouteName = '';
+    $this->assertFalse($provider->routeExists($emptyRouteName));
+    $emptyRouteName = NULL;
+    $this->assertFalse($provider->routeExists($emptyRouteName));
+    $this->assertFalse($provider->routeExists('route_z'));
+    $this->assertTrue($provider->routeExists('route_a'));
+    $this->assertTrue($provider->routeExists('route_b'));
+
     $route = $provider->getRouteByName('route_a');
     $this->assertEquals('/path/one', $route->getPath(), 'The right route pattern was found.');
     $this->assertEquals(['GET'], $route->getMethods(), 'The right route method was found.');
diff --git a/core/tests/Drupal/KernelTests/RouteProvider.php b/core/tests/Drupal/KernelTests/RouteProvider.php
index f075dbae0d..53985da611 100644
--- a/core/tests/Drupal/KernelTests/RouteProvider.php
+++ b/core/tests/Drupal/KernelTests/RouteProvider.php
@@ -42,6 +42,14 @@ public function getRouteByName($name) {
     return $this->lazyLoadItself()->getRouteByName($name);
   }

+  /**
+   * {@inheritdoc}
+   */
+  public function routeExists($name) {
+    return $this->lazyLoadItself()->routeExists($name);
+  }
+
   /**
    * {@inheritdoc}
    */