Helen Macdonald (born 1970) is an English writer, naturalist, and an affiliated research scholar at the University of Cambridge Department of History and Philosophy of Science. They are best known as the author of H is for Hawk, which won the 2014 Samuel Johnson Prize and Costa Book Award; in 2016, it won the Prix du Meilleur Livre Étranger in France. Macdonald is the child of British photojournalist Alisdair Macdonald.

Macdonald is non-binary and uses she/they pronouns.