Magrath is a surname. Notable people with the surname include:
Andrew Gordon Magrath (1813–1893), last Confederate Governor of South Carolina C. Peter Magrath (born 1933), interim president of West Virginia University Cassandra Magrath (born 1981), Australian actress Charles Alexander Magrath (1860–1949), surveyor of the Northwest Territories Cornelius Magrath (1736–1760), Irish giant John Magrath (disambiguation), multiple people Miler Magrath (c. 1523 – 1622), Irish religious figure