Somerville is a township and coastal rural locality in Victoria, Australia, 53 km southeast from Melbourne's central business district, as a part of the urban enclave on Western Port comprising Somerville, Hastings, Bittern, Crib Point, and Tyabb. Its local government area is the Shire of Mornington Peninsula. At the 2016 Census, Somerville had a population of 11,336 up from 10,730 in 2011, 10,704 in 2006 and 10,049 in 2001.
The size of Somerville is approximately 38 km².
Originally an orchard town Somerville has experienced significant population growth over the last twenty years.
It is served by Somerville railway station on the Stony Point Line, as well as a bus service to Frankston.
Yaringa Marina, east of the township, offers boat access to Western Port.