Alker is a surname. Notable people with the surname include:
Doug Alker (1940–2025), British writer and deaf activist Hayward Alker (1937–2007), American academic and writer Hermann Alker (1885–1967), German architect Imre Alker (born 1941), Hungarian wrestler John Alker (fl. 1797–1832), English clockmaker Malcolm Alker (born 1978), English rugby league player Steve Alker (born 1964), Welsh darts player Steven Alker (born 1971), New Zealand golfer