Cecina (Italian pronunciation: [ˈtʃɛːtʃina]) is a comune (municipality) of 28,322 inhabitants in the Province of Livorno in the Italian region Tuscany, located about 80 kilometres (50 mi) southwest of Florence and about 30 kilometres (19 mi) southeast of Livorno.

The territory of Cecina borders the following municipalities: Bibbona, Casale Marittimo, Castellina Marittima, Guardistallo, Montescudaio, Riparbella, Rosignano Marittimo.

An archaeological park close to the town houses the remains of a Roman villa from the 1st century BC.