Delahunty is a surname. Notable people with the surname include:
Catherine Delahunty (born 1953), New Zealand politician George Delahunty (born 1952), physiologist and endocrinologist Hugh Delahunty (born 1949), Australian politician Jo Delahunty (born 1963), British barrister, judge, and legal academic Joseph Delahunty (died 2024), American politician Kieran Delahunty, Irish hurler Mary Delahunty (born 1951), Australian journalist and politician Mike Delahunty (born 1952), Australian rules footballer Robert Delahunty, American legal scholar Sarah Delahunty (born 1952), New Zealand writer Tom Delahunty (1935–2018), New Zealand association football referee
See also Tom De La Hunty (born 1956), British bobsledder Delahunty v Player and Wills (Ireland) Ltd., Irish court case