Fairfield Marina is a boat facility on Ullswater in the Lake District, situated next to Ullswater Marine near the north end of the lake. It offers jetty moorings and swinging moorings, with draft restrictions applying to jetty berths.

The marina is associated with Ullswater Holiday Park at Watermillock and provides services including boat parking, seasonal storage, and launching facilities. Ullswater is noted as a relatively quiet lake, making it a popular choice for keeping a boat.

The surrounding area also features additional swinging moorings in nearby bays, some leased through the Dalemain estate.