The Marsh Biography Award is a British literary award, given to the author of the best biography written in the previous two years by a British author. It was established in 1987 and is presented biennially. It is one of a group of 41 awards given by the Marsh Christian Trust, in the areas of conservation, science, the arts, heritage, literature and volunteering, known collectively as the Marsh Awards. The Marsh Christian Trust and the English Speaking Union present this award in partnership.