Valentano is a town and comune of the province of Viterbo, in the Lazio region of central Italy.

The town is named for the first time in a manuscript of 813 in the Farfa Register; starting in 844 a "Balentanu" appears in other documents of the abbey of San Salvatore on Mt.

The land was definitely inhabited in prehistoric times, and important finds in the Lake Mezzano and near Mt.

In the Renaissance period, the town fell under the dominion of the Farnese family: it is to them that Valentano owes its fortress (Rocca) and many of its churches.

The gate itself is a witness to the tragedy, since one of its stones is missing, but in 2004 a plaque was placed in the Via Trento e Trieste to commemorate all local victims of World War II.