Summer Hill is a suburb of Sydney, in the state of New South Wales, Australia. Summer Hill is located 7 kilometres west of the Sydney central business district, in the local government area of the Inner West Council.
Summer Hill is a primarily residential suburb of Sydney's Inner West, adjoining two of Sydney's major arterial roads, Parramatta Road and Liverpool Road. The first land grant was made in 1794 to former convict and jailor Henry Kable, and the suburb began growing following the opening of the railway station on the Main Suburban railway line, in 1879.
By the 1920s, the suburb had become relatively upper class, with large estates and mansions built throughout the suburb. Some of these still exist today. Following a transition to a working-class suburb in the mid-20th century, when many of the large estates were demolished or subdivided, the suburb today has a "village" character and a mix of medium-density apartment blocks and federation houses.