Heenan is a surname of Irish origin. Notable people with the surname include:
Ben Heenan (born 1990), American footballer Bobby Heenan (1944–2017), American wrestler Brian Heenan (born 1937), Australian Roman Catholic bishop Catherine Heenan, American journalist Daniel Heenan (born 1981), Australian rugby player Deirdre Heenan, academic Donald Heenan (1908–1961), New Zealand cricketer Eric Heenan (born 1945), Australian lawyer Eric Heenan (politician) (1900–1998), Australian politician George Heenan (1855–1912), New Zealand cricketer Jake Heenan (born 1992), New Zealand rugby player Jerry Heenan (1941-2010), Canadian professional wrestler Joe Heenan (1888–1951), New Zealand law draftsman John Heenan (disambiguation), several persons Katie Heenan (born 1985), American gymnast Maurice Heenan (1912–2000), New Zealand lawyer Mick Heenan, Australian professional rugby union coach Patrick Heenan (disambiguation), several persons Paul Heenan, the guitarist of the American rock band Monovox Peter Brian Heenan, (born 1961), New Zealand botanist Peter Heenan (1875–1948), Canadian politician Roy Heenan (1935–2017), Canadian lawyer
See also Heenan & Froude, a United Kingdom-based engineering company Heenan Blaikie LLP, Canadian law firm The Heenan Family, a stable of wrestlers Heenan Highway, part of Ontario Highway 71, Canada