Bella Vista is located 33 kilometres north-west of the Sydney central business district and is part of The Hills Shire. It is a suburb in the Hills District of Greater Western Sydney and is in the state of New South Wales, Australia. Bella Vista's Norwest Business Park is home to several Fortune 500 companies, a number of shopping centres, high-rise buildings, and industrial and recreational spaces.

The Hills Shire is a local government area in the Greater Sydney region of Sydney, New South Wales, Australia. The area is north-west of the Sydney central business district, and encompasses 401 square kilometres (155 sq mi) stretching from the M2 Hills Motorway in the south to Wisemans Ferry on the Hawkesbury River in the north. The Hills Shire had a population of 191,876 as of the 2021 census.