Heffernan is an Irish surname derived from the Gaelic Ó hIfearnáin, which comes from the given name Ifearnan meaning "demon". Heffernan gives rise to alternatives such as Heffernon and Hefferan. The name sometimes contains the O' prefix.

List of people surnamed Heffernan

Angie Heffernan, Fijian activist

Bill Heffernan (born 1943), Australian senator

Bob Heffernan, Australian footballer

Chris Heffernan, Australian footballer

Christian Heffernan, Canadian football player

Christy Heffernan, Irish sportsman

Daniel Heffernan, English footballer

Dean Heffernan, Australian soccer player

Frank Heffernan (1892–1938), Canadian hockey player

Gavin Heffernan, Canadian filmmaker

Gerald Heffernan, Canadian ice hockey player

James Heffernan (Irish politician), Irish politician

James J. Heffernan (1888–1967), U.S. Representative from New York

John Heffernan (disambiguation), several people

Josephine Heffernan (1876 - 1962), Irish-American nurse

Kate Heffernan (born 1999), New Zealand cricketer

Kevin Heffernan (disambiguation), several people

Killian Heffernan (born 2002), Irish darts player

Margaret Heffernan, international businesswoman and writer

Michael Heffernan (disambiguation), several people

Nathan Heffernan (1920–2007), American judge

Neil Heffernan (1970–present), American professor of computer science

Paul Heffernan, Irish footballer

Ray Heffernan (disambiguation), several people

Robert Heffernan, Irish walker

Roy Heffernan (1926–1993), Australian wrestler

Seamie Heffernan, Irish jockey

Virginia Heffernan, American journalist

William Heffernan, American author

William J. Heffernan (1872–1955), New York politician

Fictional characters

Carrie Heffernan, fictional character in The King of Queens

Doug Heffernan, fictional character in The King of Queens

Other uses

Heffernan v. City of Paterson, a legal case

Sources

Heffernan at behindthename.com

Anglicised Irish-language surnames

Surnames of Irish origin

Heffernan