'Customs House'; Romagnol: Dughena) is a curazia of San Marino.

[3] The town is situated at the northernmost point of San Marino after Falciano, close to the border with Italy (at Cerasolo Ausa, a frazione of Coriano, in the province of Rimini).

Due to its size, in 2006 it asked to split away from Serravalle and become its own castello, but in 2007 the proposal was refused.

[3] Partial autonomy is reflected in Dogana's having its own postal code (47891), while the rest of Serravalle carries the designation 47899.

Dogana is the main entry point for travellers arriving into San Marino from Italy (by freeway no.