 Agrigento (AG): Valenciennes (France); Tampa (Florida, United States) |
| Augusta (SR): Megara (Greece) |
| Calascibetta (EN): Chapelle-lez-Herlaimont (Belgium, since 2007) |
| Caltanissetta (CL): Rochester (New York, United States) |
| Caronia (ME): Montespertoli (Florence - Tuscany - Italy) |
| Castronovo di Sicilia (PA): Armento (Potenza - Basilicata); Venaria Reale (Turin - Piedmont - Italy) |
| Catania (CT): Phoenix (Arizona, United States), since 2001 |
| Centuripe (EN): Lanuvio (Rome-Lazio-Italy) |
| Delia (CL): Vaughan (Canada), since August 1998 |
| Favara (AG): Andujar (Spain) |
| Furci Siculo (ME): Octeville Sur Mer (France) |
| Grotte (AG): Lenola (Latina-Lazio-Italy) |
| Marineo (PA): Garfield Lodi (USA); Sainte Sigolene (France) |
| Menfi (AG): Moretta (Cuneo - Piedmont - Italy), since May 1999; Ettlingen (Germany), since November 2004; Canelli (Asti-Piedmont - Italy), since 28th June 1997; Chivilcoy (Argentina) |
| Montevago (AG): Zidlochovice (Czech Republic) |
| Palazzolo Acreide (SR): Sikyon (Greece) |
| Palermo (PA): Miami (Florida, United States), since March 1997; Bizerta (Tunisia), since March 2000; Jaroslavl (Russia), since June 1998; Khan Younis (Gaza Strip), since October 1998; Hanoi (Vietnam), since October 2000; Palermo (Huila, Colombia), since September 1998; Sestu (Cagliari - Sardinia - Italy), since April 1999; Bukavu (Congo), since June 1998; Santiago di Cuba (Cuba), since May 1996; Tbilisi (Georgia), since November 1997; Cheng Du (People’s Republic of China), since December 1999 |
| Piazza Armerina (EN): Spello (Perugia - Umbria); Ventimiglia (Imperia - Liguria); Canelli (Asti - Piedmont) |
| Pietraperzia (EN): Pioltello (Milan - Lombardy - Italy), since August 2006 |
| Prizzi (PA): Saint Selve (Bordeaux, Gironde, Aquitaine, France) |
| Ravanusa (AG): Sulzbach (Germany) |
| Realmonte (AG): Dobryanka (Russia); Eppelborn (Germany); Hornaing (France) |
| Roccalumera (ME): Pembroke (Malta), since July 2006 |
| San Cipirello (PA): Basarabi (Romania), since September 2006 |
| Sciacca (AG): San Salvador Bahia (Brazil), since July 2001 |
| Sutera (CL): Nola (Naples - Campania - Italy); Broxbourne (England); Dillingen (Germany) |
| Villarosa (EN): Le Quesnoy (Nord-Pas-de-Calais - France), since 2006; Morlanwelz (Belgium), since 2006 |
| Vittoria (RG): Mátészalka (Hungary), since April 1997; Siggiewi (Malta), since June 2003 |
The sister cities for the towns in Sicily (Sicilia), the cooperative agreements with european and other towns all over the world
