diff --git a/actions/mediawiki b/actions/mediawiki
index 08ad36e1c..7da44c756 100755
--- a/actions/mediawiki
+++ b/actions/mediawiki
@@ -52,6 +52,10 @@ def parse_arguments():
         'set-server-url', help='Set the value of $wgServer for this server')
     server_url.add_argument('server_url', help='value of $wgServer')
 
+    site_name = subparsers.add_parser(
+        'set-site-name', help='Set the value of $wgSitename for this Wiki')
+    site_name.add_argument('site_name', help='value of $wgSitename')
+
     subparsers.required = True
     return parser.parse_args()
 
@@ -253,6 +257,11 @@ def subcommand_set_server_url(arguments):
     _update_setting('$wgServer', f'$wgServer = "{arguments.server_url}";\n')
 
 
+def subcommand_set_site_name(arguments):
+    """Set the value of $wgSitename for this MediaWiki server."""
+    _update_setting('$wgSitename', f'$wgSitename = "{arguments.site_name}";\n')
+
+
 def main():
     """Parse arguments and perform all duties."""
     arguments = parse_arguments()
diff --git a/plinth/modules/mediawiki/__init__.py b/plinth/modules/mediawiki/__init__.py
index a71903b0d..6ca1f3c0d 100644
--- a/plinth/modules/mediawiki/__init__.py
+++ b/plinth/modules/mediawiki/__init__.py
@@ -166,3 +166,13 @@ def set_server_url(domain):
 
     actions.superuser_run('mediawiki',
                           ['set-server-url', f'{protocol}://{domain}'])
+
+
+def get_site_name():
+    """Return the value of MediaWiki's site name."""
+    return _get_config_value('$wgSitename') or 'Wiki'
+
+
+def set_site_name(site_name):
+    """Set the value of $wgSitename."""
+    actions.superuser_run('mediawiki', ['set-site-name', site_name])
diff --git a/plinth/modules/mediawiki/data/etc/mediawiki/FreedomBoxStaticSettings.php b/plinth/modules/mediawiki/data/etc/mediawiki/FreedomBoxStaticSettings.php
index 6026cfd6d..878c5be7d 100644
--- a/plinth/modules/mediawiki/data/etc/mediawiki/FreedomBoxStaticSettings.php
+++ b/plinth/modules/mediawiki/data/etc/mediawiki/FreedomBoxStaticSettings.php
@@ -45,6 +45,9 @@ $wgDefaultSkin = "timeless";
 # Domain Name
 $wgServer = "https://freedombox.local";
 
+# Site Name
+$wgSitename = "Wiki";
+
 # Enable default extensions
 wfLoadExtension( 'Cite' );
 wfLoadExtension( 'Interwiki' );
diff --git a/plinth/modules/mediawiki/forms.py b/plinth/modules/mediawiki/forms.py
index b672865a8..85372dfc5 100644
--- a/plinth/modules/mediawiki/forms.py
+++ b/plinth/modules/mediawiki/forms.py
@@ -6,6 +6,7 @@ FreedomBox app for configuring MediaWiki.
 import pathlib
 
 from django import forms
+from django.core import validators
 from django.utils.translation import gettext_lazy as _
 
 
@@ -35,6 +36,11 @@ class MediaWikiForm(forms.Form):  # pylint: disable=W0232
             'such as in footer, feeds and emails. Examples: '
             '"myfreedombox.example.org" or "example.onion".'))
 
+    site_name = forms.CharField(
+        label=_('Site Name'), required=False,
+        help_text=_('Name of the site as displayed throughout the wiki.'),
+        validators=[validators.RegexValidator('[$"]', inverse_match=True)])
+
     enable_public_registrations = forms.BooleanField(
         label=_('Enable public registrations'), required=False,
         help_text=_('If enabled, anyone on the internet will be able to '
diff --git a/plinth/modules/mediawiki/tests/test_settings.py b/plinth/modules/mediawiki/tests/test_settings.py
index 3ffc87b18..2bd9b0644 100644
--- a/plinth/modules/mediawiki/tests/test_settings.py
+++ b/plinth/modules/mediawiki/tests/test_settings.py
@@ -66,3 +66,11 @@ def test_server_url():
     new_domain = 'mydomain.freedombox.rocks'
     mediawiki.set_server_url(new_domain)
     assert mediawiki.get_server_url() == new_domain
+
+
+def test_site_name():
+    """Test getting and setting $wgSitename."""
+    assert mediawiki.get_site_name() == 'Wiki'
+    new_site_name = 'My MediaWiki'
+    mediawiki.set_site_name(new_site_name)
+    assert mediawiki.get_site_name() == new_site_name
diff --git a/plinth/modules/mediawiki/views.py b/plinth/modules/mediawiki/views.py
index e6f2203b6..524c322ab 100644
--- a/plinth/modules/mediawiki/views.py
+++ b/plinth/modules/mediawiki/views.py
@@ -12,8 +12,8 @@ from plinth import actions, views
 from plinth.errors import ActionError
 from plinth.modules import mediawiki
 
-from . import (get_default_skin, get_server_url, is_private_mode_enabled,
-               is_public_registration_enabled)
+from . import (get_default_skin, get_server_url, get_site_name,
+               is_private_mode_enabled, is_public_registration_enabled)
 from .forms import MediaWikiForm
 
 logger = logging.getLogger(__name__)
@@ -32,7 +32,8 @@ class MediaWikiAppView(views.AppView):
             'enable_public_registrations': is_public_registration_enabled(),
             'enable_private_mode': is_private_mode_enabled(),
             'default_skin': get_default_skin(),
-            'domain': get_server_url()
+            'domain': get_server_url(),
+            'site_name': get_site_name()
         })
         return initial
 
@@ -97,4 +98,8 @@ class MediaWikiAppView(views.AppView):
             mediawiki.set_server_url(new_config['domain'])
             messages.success(self.request, _('Domain name updated'))
 
+        if is_changed('site_name'):
+            mediawiki.set_site_name(new_config['site_name'])
+            messages.success(self.request, _('Site name updated'))
+
         return super().form_valid(form)