diff --git a/network-api/networkapi/settings.py b/network-api/networkapi/settings.py
index 9197797640c..4b347dd5bed 100644
--- a/network-api/networkapi/settings.py
+++ b/network-api/networkapi/settings.py
@@ -287,6 +287,7 @@
             "whitenoise.middleware.WhiteNoiseMiddleware",
             "django.middleware.gzip.GZipMiddleware",
             "debug_toolbar.middleware.DebugToolbarMiddleware" if DEBUG_TOOLBAR_ENABLED else None,
+            "networkapi.utility.middleware.NormalizeLocaleMiddleware",
             "networkapi.utility.middleware.TargetDomainRedirectMiddleware",
             "django.contrib.sessions.middleware.SessionMiddleware",
             #
diff --git a/network-api/networkapi/utility/middleware.py b/network-api/networkapi/utility/middleware.py
index 1e1b83bbb9c..86f5c3369ce 100644
--- a/network-api/networkapi/utility/middleware.py
+++ b/network-api/networkapi/utility/middleware.py
@@ -1,5 +1,7 @@
 from django.conf import settings
 from django.http.response import HttpResponseRedirectBase
+from django.shortcuts import redirect
+from django.utils.deprecation import MiddlewareMixin
 
 hostnames = settings.TARGET_DOMAINS
 
@@ -52,3 +54,30 @@ def __call__(self, request):
                 return HttpResponseTemporaryRedirect(redirect_url)
 
         return self.get_response(request)
+
+
+# Middleware to normalize the pt-br and fy-nl locales to their capitalized regions (pt-BR and fy-NL)
+class NormalizeLocaleMiddleware(MiddlewareMixin):
+    # Dictionary mapping incorrect locale keys to their normalized forms
+    locales_to_normalize = {"pt-br": "pt-BR", "fy-nl": "fy-NL"}
+
+    def process_request(self, request):
+        # Split the path into segments
+        path_segments = request.path_info.strip("/").split("/")
+
+        # Check if the first segment is a locale that needs to be normalized
+        if len(path_segments) > 0 and path_segments[0] in self.locales_to_normalize:
+            normalized_locale = self.locales_to_normalize[path_segments[0]]
+            # Only redirect if the current locale is not already in the correct form
+            if path_segments[0] != normalized_locale:
+                path_segments[0] = normalized_locale
+                new_path = "/" + "/".join(path_segments) + "/"  # Ensure trailing slash
+
+                # Preserve query parameters if they exist
+                query_string = request.META.get("QUERY_STRING")
+                if query_string:
+                    new_path += f"?{query_string}"
+
+                return redirect(new_path, permanent=False)  # Using temporary redirects
+
+        return None
diff --git a/network-api/networkapi/utility/tests/test_middleware.py b/network-api/networkapi/utility/tests/test_middleware.py
index dd504c8cc7f..fe0f486dd41 100644
--- a/network-api/networkapi/utility/tests/test_middleware.py
+++ b/network-api/networkapi/utility/tests/test_middleware.py
@@ -18,3 +18,21 @@ def test_sends_x_robots_tag(self):
         xrobotstag_middleware = XRobotsTagMiddleware(MagicMock())
         response = xrobotstag_middleware(MagicMock())
         response.__setitem__.assert_called_with("X-Robots-Tag", "noindex")
+
+
+class NormalizeLocaleMiddlewareTest(TestCase):
+    def test_redirect_with_pt_br_language(self):
+        # Simulate a request to a URL with 'pt-br' in the path
+        response = self.client.get("/pt-br/?form=donate-header")
+
+        # Assert that the middleware issues a redirect to the normalized URL
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, "/pt-BR/?form=donate-header")
+
+    def test_redirect_with_fy_NL_language(self):
+        # Simulate a request to a URL with 'fy-nl' in the path
+        response = self.client.get("/fy-nl/?form=donate-header")
+
+        # Assert that the middleware issues a redirect to the normalized URL
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(response.url, "/fy-NL/?form=donate-header")