Llandilo is a suburb of Sydney, in the state of New South Wales, Australia 54 kilometres north-west of the Sydney central business district, in the local government area of the City of Penrith. It is part of the Greater Western Sydney region. Llandilo is a small semi-rural outcrop between two creeks. A southern part of Llandilo was incorporated into an expansion of the suburb of Jordan Springs on 22 November 2019.