diff --git a/app/dashboard/[id]/page.tsx b/app/dashboard/[id]/page.tsx
index 2e58e46..99cda0f 100644
--- a/app/dashboard/[id]/page.tsx
+++ b/app/dashboard/[id]/page.tsx
@@ -147,7 +147,7 @@ export default function AssociationDetailPage() {
             Torna alle associazioni
           </Button>
           <PageHeader
-            title={association.name}
+            title={association.nasFolderNumber != null ? `#${association.nasFolderNumber} ${association.name}` : association.name}
             description={`${association.associates?.length ?? 0} soci registrati`}
             actions={
               <>
diff --git a/components/associations/association-table.tsx b/components/associations/association-table.tsx
index b348e19..6c8d197 100644
--- a/components/associations/association-table.tsx
+++ b/components/associations/association-table.tsx
@@ -44,7 +44,12 @@ export function AssociationTable({ associations }: { associations: Association[]
               className="cursor-pointer"
               onClick={() => router.push(`/dashboard/${association.id}`)}
             >
-              <TableCell className="font-medium">{association.name}</TableCell>
+              <TableCell className="font-medium">
+                {association.nasFolderNumber != null && (
+                  <span className="text-muted-foreground">#{association.nasFolderNumber} </span>
+                )}
+                {association.name}
+              </TableCell>
               <TableCell className="hidden max-w-64 truncate text-muted-foreground md:table-cell">
                 {association.address}
               </TableCell>
diff --git a/components/associations/edit-association-dialog.tsx b/components/associations/edit-association-dialog.tsx
index cbbe149..dd0a07c 100644
--- a/components/associations/edit-association-dialog.tsx
+++ b/components/associations/edit-association-dialog.tsx
@@ -31,6 +31,7 @@ export function EditAssociationDialog({
   const [vatNumber, setVatNumber] = useState(association.vatNumber ?? "");
   const [runtsId, setRuntsId] = useState(association.runtsId ?? "");
   const [ratificationCode, setRatificationCode] = useState(association.ratificationCode ?? "");
+  const [nasFolderNumber, setNasFolderNumber] = useState(association.nasFolderNumber?.toString() ?? "");
   const [isShown, setIsShown] = useState(association.isShown ?? true);
 
   useEffect(() => {
@@ -40,6 +41,7 @@ export function EditAssociationDialog({
       setVatNumber(association.vatNumber ?? "");
       setRuntsId(association.runtsId ?? "");
       setRatificationCode(association.ratificationCode ?? "");
+      setNasFolderNumber(association.nasFolderNumber?.toString() ?? "");
       setIsShown(association.isShown ?? true);
     }
   }, [open, association]);
@@ -55,6 +57,7 @@ export function EditAssociationDialog({
         vatNumber,
         runtsId,
         ratificationCode,
+        nasFolderNumber: nasFolderNumber.trim() === "" ? undefined : Number(nasFolderNumber),
         isShown,
       });
       onSaved(updated);
@@ -111,6 +114,17 @@ export function EditAssociationDialog({
               />
             </div>
 
+            <div className="space-y-2">
+              <Label htmlFor="e-nasFolderNumber">Numero cartella NAS</Label>
+              <Input
+                id="e-nasFolderNumber"
+                type="number"
+                value={nasFolderNumber}
+                onChange={(e) => setNasFolderNumber(e.target.value)}
+                placeholder="Usato per generare il codice di ratifica"
+              />
+            </div>
+
             <div className="flex items-center justify-between rounded-lg border p-3 sm:col-span-2">
               <div>
                 <Label htmlFor="e-isShown">Associazione attiva</Label>
diff --git a/lib/models.ts b/lib/models.ts
index 7db35b1..b03b84a 100644
--- a/lib/models.ts
+++ b/lib/models.ts
@@ -28,6 +28,7 @@ export interface Association {
   associates?: Associate[];
   users?: User[];
   ratificationCode?: string;
+  nasFolderNumber?: number;
 }
 
 export interface LoginResponse {