William J. Spain (3 September 1865 – 9 April 1936) was a famous Irish hurler and Gaelic footballer. He was the first player to win All Ireland hurling and football medals. He played Gaelic football with Commercials and with the Limerick senior inter-county team in the 1880s. Spain also played hurling with the CJ Kickhams club and with the Dublin senior inter-county team in the 1880s. Spain was the first player to score a goal in an All Ireland football final and the first player to score a hat-trick of goals in an All Ireland hurling final.