St Albans is a small and historic village in New South Wales, Australia.

St Albans is in the valley of the Macdonald River, about fifteen kilometres north of the junction of the Macdonald and the Hawkesbury River. In the early part of the colonial settlement of New South Wales, the Macdonald Valley was an important agricultural area because of its accessibility by water. However with the development of railways and extensive agricultural development west of the Great Dividing Range, the Macdonald Valley became less important and declined to become a remote backwater.

St Albans is very small, but it has an historic pub and an old church, and is a popular scenic destination for day-trippers from Sydney. It was named after the town St Albans north of London, England.