Carlingford is a suburb of Sydney, in the state of New South Wales, Australia. Carlingford is 22 kilometres north-west of the Sydney central business district in the local government area of City of Parramatta. Carlingford sits at the meeting point of Northern Sydney and Western Sydney sitting on both sides of Pennant Hills Road which generally acts as a divider of the two regions. While being part of City of Parramatta, it is sometimes referred to as being part of the Hills District.

Much of Carlingford has relatively limited public transport access, which is reflected in the low public transport patronage by commuters. At the 2011 census, 18.1% of employed people travelled to work on public transport and 64.1% by car (either as driver or as passenger).