diff --git a/app.py b/app.py
index 851b2c7..f375f2b 100644
--- a/app.py
+++ b/app.py
@@ -122,12 +122,10 @@ def db_to_json():
 import re
 
 def validate_player_name(name):
-    # Only allow a-z, A-Z, 0-9, spaces, hyphens, and periods, max 50 chars
-    return bool(re.fullmatch(r'[a-zA-Z0-9 .-]{1,50}', name))
+    return bool(re.fullmatch(r'[a-zA-Z0-9\u00C0-\u024F .-]{1,50}', name))
 
 def validate_guest_name(name):
-    # Only allow a-z, A-Z, 0-9, spaces, hyphens, and periods, max 50 chars
-    return bool(re.fullmatch(r'[a-zA-Z0-9 .-]{1,50}', name))
+    return bool(re.fullmatch(r'[a-zA-Z0-9\u00C0-\u024F .-]{1,50}', name))
 
 def validate_date_str(date_str):
     # Format: DD/MM/YY
@@ -252,7 +250,7 @@ def get_players():
 def add_player():
     data = request.json
     name = (data.get('name') or '').strip()
-    if not re.fullmatch(r'[a-zA-Z0-9 .\-]{1,50}', name):
+    if not re.fullmatch(r'[a-zA-Z0-9\u00C0-\u024F .\-]{1,50}', name):
         return jsonify({'status': 'error', 'message': 'Invalid name'}), 400
     if Player.query.filter_by(name=name).first():
         return jsonify({'status': 'error', 'message': 'Player already exists'}), 400
diff --git a/static/app.js b/static/app.js
index 15330c2..fff5550 100644
--- a/static/app.js
+++ b/static/app.js
@@ -178,7 +178,7 @@ function renderTable() {
                 guestNameInput.value = data.guestNames[date] || '';
                 return;
             }
-            if (!/^([a-zA-Z0-9 .-]+)$/.test(value)) {
+            if (!/^[a-zA-Z0-9\u00C0-\u024F .-]+$/.test(value)) {
                 alert('Guest name can only contain letters, numbers, spaces, hyphens, and periods.');
                 guestNameInput.value = data.guestNames[date] || '';
                 return;
diff --git a/templates/admin.html b/templates/admin.html
index 9d183c7..dd6d82c 100644
--- a/templates/admin.html
+++ b/templates/admin.html
@@ -406,7 +406,7 @@
             const name = nameInput.value.trim();
             msg.textContent = '';
 
-            if (!/^[a-zA-Z0-9 .\-]{1,50}$/.test(name)) {
+            if (!/^[a-zA-Z0-9\u00C0-\u024F .\-]{1,50}$/.test(name)) {
                 msg.className = 'msg err';
                 msg.textContent = 'Invalid name. Use letters, numbers, spaces, hyphens, or periods (max 50 chars).';
                 return;