The Nab is a fell in the English Lake District. It has a moderate height of 576 metres, and lies in the quieter eastern high ground between Ullswater and Haweswater Reservoir. The Nab is included in Alfred Wainwright's list of Lakeland fells and many walkers feel compelled to climb it to complete their list of 'Wainwrights' even though it is not a significant fell and is awkward to reach.