Epping is a suburb of Sydney, in the Australian state of New South Wales, 18 kilometres north-west of the Sydney central business district in the local government area of the City of Parramatta. Epping is in the Northern Sydney region. The suburb is the most north-eastern area of the City of Parramatta. North Epping is a separate suburb to the north and under a different council, Hornsby Shire.

According to the 2021 census, Epping had a population of 29,551, of whom 48.5% were male and 51.5% were female. They were further broken down as follows:

Epping railway station is a junction station on the Northern Line of the Sydney Trains network, the Central Coast & Newcastle Line of the NSW TrainLink network, and the rapid transit Sydney Metro Northwest since its opening on 26 May 2019.