Freebairn is a surname. Notable people with the surname include:
Alfred Robert Freebairn (1794–1846), English engraver John Freebairn (1930–2016), Australian politician Kate Freebairn, Australian journalist and television news presenter Robert Freebairn (1765–1808), British landscape painter Stu Freebairn (1932–2025), New Zealand rugby union player Ian Freebairn-Smith (1932–2025), American composer Vanessa Freebairn-Smith, American cellist