Percival Arland "Percy" Ussher (1899–1980) was an Anglo-Irish academic, essayist and translator.
Born in Battersea, London, he studied at Cambridge University for some time. In 1926 he published a translation of The Midnight Court (Cúirt an Mheán-Oíche) by the Irish Gaelic-language poet, Brian Merriman. Ussher published The Face and Mind of Ireland (1949) and Three Great Irishmen (1952), a comparative study of Shaw, Yeats, and Joyce. Ussher moved to County Waterford to manage the family farm before moving to Dublin in 1953.