| Port Code | Port Name | Country |
| ITSEA | Silea | Italy |
| ITSEC | Settimello-Calenzano | Italy |
| ITSED | Sedriano | Italy |
| ITSEE | Sesto Calende | Italy |
| ITSEG | Senigallia | Italy |
| ITSEI | Serravalle Pistoiese | Italy |
| ITSEN | Senago | Italy |
| ITSEO | Sepino | Italy |
| ITSEP | Settimo di Pescantina | Italy |
| ITSER | Seriate | Italy |
| ITSET | Settecamini | Italy |
| ITSEV | Seveso | Italy |
| ITSFL | Santa Flavia | Italy |
| ITSFP | San Felice sul Panaro | Italy |
| ITSFR | San Fior | Italy |
| ITSGA | San Giovanni Reatino | Italy |
| ITSGB | San Giovanni Bianco | Italy |
| ITSGE | Segrate | Italy |
| ITSGF | Monferrato | Italy |
| ITSGG | San Giórgio di Nogaro | Italy |
| ITSGI | San Giuliano Milanese | Italy |
| ITSGL | San Giovanni Lupatoto | Italy |
| ITSGM | San Giovanni in Marignano | Italy |
| ITSGN | San Giovanni al Natisone | Italy |
| ITSGO | Seregno | Italy |
| ITSGP | San Giorgio di Piano | Italy |
| ITSGR | Salgareda | Italy |
| ITSGS | San Genesio | Italy |
| ITSGT | San Giuliano Terme | Italy |
| ITSGU | San Guiseppe | Italy |
| ITSGV | San Giovanni Valdarno | Italy |
| ITSHA | Santhià | Italy |
| ITSHI | Schieti | Italy |
| ITSIB | San Giorgio in Bosco | Italy |
| ITSID | Siderno Marina | Italy |
| ITSIE | Sesto Imolese | Italy |
| ITSIL | San Giorgio a Liri | Italy |
| ITSIN | Casina | Italy |
| ITSIO | Siano | Italy |
| ITSIR | Siracusa | Italy |
| ITSIS | Sissa | Italy |
| ITSIT | Ostia | Italy |
| ITSIV | Sommariva del Bosco | Italy |
| ITSLA | Santa Marina Salina | Italy |
| ITSLE | Sellero | Italy |
| ITSLG | Solignano | Italy |
| ITSLH | Scalenghe | Italy |
| ITSLL | Scilla | Italy |
| ITSLN | Salorno | Italy |
| ITSLO | Salò | Italy |
| ITSLR | Solero | Italy |
| ITSLS | San Lazzaro di Savena | Italy |
| ITSLT | Spoleto | Italy |
| ITSLU | Salussola | Italy |
| ITSLZ | Salizzole | Italy |
| ITSMB | Somma Lombardo | Italy |
| ITSMC | Santa Maria Capua Vetere | Italy |
| ITSMD | San Martino dall'Argine | Italy |
| ITSME | Santa Maria degli Angeli | Italy |
| ITSMF | San Martino Alfieri | Italy |
| ITSMG | San Michele di Ganzaria | Italy |
| ITSMI | San Miniato | Italy |
| ITSML | Santa Margherita Ligure | Italy |
| ITSMM | San Michele Mondovì | Italy |
| ITSMN | Santa Maria Nuova | Italy |
| ITSMO | San Mauro Torinese | Italy |
| ITSMP | San Michele Prazzo | Italy |
| ITSMR | San Marco Argentano | Italy |
| ITSMS | Santa Maria di Sala | Italy |
| ITSMU | San Martino di Lupari | Italy |
| ITSMV | San Maurizio Canavese | Italy |
| ITSMX | San Michele Extra | Italy |
| ITSNA | Siena | Italy |
| ITSNC | San Cesario di Lecce | Italy |
| ITSND | Sondrio | Italy |
| ITSNE | Santena | Italy |
| ITSNF | San Nicolò Ferrarese | Italy |
| ITSNG | San Giorgio del Sannio | Italy |
| ITSNL | Sinalunga | Italy |
| ITSNM | San Michele, Alessandria | Italy |
| ITSNO | Seano | Italy |
| ITSNP | San Pietro | Italy |
| ITSNS | San Nicola la Strada | Italy |
| ITSNT | San Nicolo a Trebbia | Italy |
| ITSNU | Sanguinetto | Italy |
| ITSNV | San Vendemiano | Italy |
| ITSOC | Soriano nel Cimino | Italy |
| ITSOE | Soleto | Italy |
| ITSOG | Somaglia | Italy |
| ITSOI | Solesino | Italy |
| ITSOL | Solofra | Italy |
| ITSOM | San Pietro Mosezzo | Italy |
| ITSON | Soncino | Italy |
| ITSOP | Osoppo | Italy |
| ITSOR | Sorbolo | Italy |
| ITSOS | Sossano | Italy |
| ITSOT | Cenate Sotto | Italy |
| ITSOV | Soave | Italy |
| ITSOZ | Solza | Italy |
| ITSPA | Santa Panagia | Italy |