diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 0cf5fa2..092eadf 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1410,6 +1410,10 @@ function template_preprocess_maintenance_page(&$variables) {
   $variables['logo'] = theme_get_setting('logo.url');
   $variables['site_name'] = $site_config->get('name');
   $variables['site_slogan'] = $site_config->get('slogan');
+
+  // Maintenance page and install page need page title in variable because there
+  // are no blocks.
+  $variables['title'] = $variables['page']['#title'];
 }
 
 /**
diff --git a/core/modules/system/templates/install-page.html.twig b/core/modules/system/templates/install-page.html.twig
index 9c1ee12..dd7a0f6 100644
--- a/core/modules/system/templates/install-page.html.twig
+++ b/core/modules/system/templates/install-page.html.twig
@@ -27,6 +27,9 @@
     </header>
 
     <main role="main">
+      {% if page.title %}
+        <h1>{{ page.title }}</h1>
+      {% endif %}
       {{ page.highlighted }}
       {{ page.content }}
     </main>
diff --git a/core/modules/system/templates/maintenance-page.html.twig b/core/modules/system/templates/maintenance-page.html.twig
index 67967ef..538d192 100644
--- a/core/modules/system/templates/maintenance-page.html.twig
+++ b/core/modules/system/templates/maintenance-page.html.twig
@@ -32,6 +32,10 @@
 </header>
 
 <main role="main">
+  {% if page.title %}
+    <h1>{{ page.title }}</h1>
+  {% endif %}
+
   {{ page.highlighted }}
 
   {{ page.content }}
diff --git a/core/themes/classy/templates/layout/maintenance-page.html.twig b/core/themes/classy/templates/layout/maintenance-page.html.twig
index 5e3b73c..a7f386b 100644
--- a/core/themes/classy/templates/layout/maintenance-page.html.twig
+++ b/core/themes/classy/templates/layout/maintenance-page.html.twig
@@ -35,6 +35,10 @@
   </header>
 
   <main role="main">
+    {% if page.title %}
+      <h1>{{ page.title }}</h1>
+    {% endif %}
+
     {{ page.highlighted }}
 
     {{ page.content }}
diff --git a/core/themes/seven/templates/install-page.html.twig b/core/themes/seven/templates/install-page.html.twig
index 8c2828f..b7508be 100644
--- a/core/themes/seven/templates/install-page.html.twig
+++ b/core/themes/seven/templates/install-page.html.twig
@@ -24,6 +24,9 @@
   {% endif %}
 
   <main role="main">
+    {% if page.title %}
+      <h1>{{ page.title }}</h1>
+    {% endif %}
     {{ page.highlighted }}
     {{ page.content }}
   </main>
diff --git a/core/themes/seven/templates/maintenance-page.html.twig b/core/themes/seven/templates/maintenance-page.html.twig
index 8966ddc..2286e88 100644
--- a/core/themes/seven/templates/maintenance-page.html.twig
+++ b/core/themes/seven/templates/maintenance-page.html.twig
@@ -24,6 +24,9 @@
   {% endif %}
 
   <main role="main">
+    {% if title %}
+      <h1>{{ title }}</h1>
+    {% endif %}
     {{ page.highlighted }}
     {{ page.content }}
   </main>