Ahearn or Ahearne is a surname. It descends from Echthighern mac Cennétig. Notable people with the surname include:
Blake Ahearn (born 1984), American basketball player Bunny Ahearne (1900–1985), British ice hockey promoter Joe Ahearne (born 1962), British television director Michael Ahearne (born 1966), academic and author Mike Ahearn (1878–1948), American college football coach Rick Ahearn (1949–2023), American political consultant, longtime Ronald Reagan aide T. Franklin Ahearn (1886–1962), Canadian hockey club owner and politician Theresa Ahearn (1951–2000), Irish politician Thomas Ahearn (1855–1938), Canadian inventor and businessman Thomas Ahearn (Australian politician) (1929–2021) Australian politician and patent attorney William Ahearn (1858–1919), American baseball player
See also Ahearne Cup Ahearn Field House Ahern Hearn (disambiguation) 3192 A'Hearn, a minor planet