# Shanahan

Shanahan is a surname of Irish origin.
According to historian C. Thomas Cairney, the O'Shanahans were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
Notable people with the surname include:
* Bill Shanahan (born 1938), American former football coach
* Brenda Shanahan (businesswoman), Irish businesswoman
* Brenda Shanahan (politician) (born 1958), Canadian politician
* Brendan Shanahan (born 1969), Canadian ice hockey executive and former player
* Carol Shanahan (born 1957), English businesswoman
* Charif Shanahan, American poet and translator
* Christopher Shanahan (born 1960), Australian barrister
* Dan Shanahan (born 1977), Irish former hurler
* Danny Shanahan (1956–2021), American cartoonist
* David Shanahan (disambiguation), various people
* Dennis Shanahan, Australian journalist and editor
* Doug Shanahan (born 1979), American lacrosse coach and player
* Eileen Shanahan (1901–1979), Irish poet
* Eileen Shanahan (journalist) (1924–2001), American journalist
* Elizabeth Shanahan, American political scientist
* Elwill M. Shanahan (1912–1983), American politician
* Fergus Shanahan (born 1955), British journalist
* Foss Shanahan (1910–1964), New Zealand diplomat and public servant
* Frank E. Shanahan Jr. (1923–2007), American politician
* Greg Shanahan (born 1947), American baseball player
* Holly Shanahan (born 1981), New Zealand actress
* Jack Shanahan (born 1999), Irish drift driver
* James Shanahan (1920–1997), United States Army Brigadier General
* James Shanahan, birth name of Jamey Jasta (born 1977), American musician
* Jamie Shanahan (born 1967), Australian rules footballer
* Jamie Shanahan (hurler) (born 1994), Irish hurler
* Jennie Shanahan (1897–1936), member of the Irish Citizen Army
* Jeremiah F. Shanahan (1834–1886), American Roman Catholic prelate
* Jesse Shanahan (born 1991), American disability activist and astrophysicist
* Jim Shanahan (1901–1985), Australian rules footballer
* Joe Shanahan, American businessman and music industry executive
* John Shanahan (disambiguation), various people
* Joseph (Ignatius) Shanahan (1871–1943), Irish priest, missionary and bishop in Nigeria
* Katie Shanahan (born 2004), British swimmer
* Kid Shanahan (Joseph A. Shanahan, active 1873–1883), river pirate and member of the Patsy Conroy Gang
* Kyle Shanahan (born 1979), American football coach
* Louise Shanahan (born 1997), Irish athlete
* Mark Shanahan, Irish conductor
* Martin Shanahan (born 1973), Irish businessman and public servant
* Martina Shanahan (1965–2021), Irish member of the Winchester Three
* Matt Shanahan (born 1976), Australian basketball coach and former player
* Matt Shanahan (politician) (born 1964), Irish independent politician
* Maurice Shanahan (born 1990), Irish hurler, brother of Dan Shanahan
* Megan Shanahan (born 1985), Australian rugby union player
* Melanie Shanahan (1964–2003), Australian folk singer and songwriter
* Mike Shanahan (disambiguation), various people
* Murray Shanahan, professor of cognitive robotics at Imperial College London
* Neil Shanahan (1979–1999), Irish racing driver
* Nicole Shanahan (born 1985), American attorney and reported vice presidential candidate
* Patrick Shanahan (disambiguation), various people
* Paul Shanahan (1948–2011), Australian rules footballer
* Paul Shanahan (hurler), Irish hurler
* Peter Shanahan (born 1946), Australian rules footballer
* Phiala E. Shanahan, Australian theoretical physicist
* Philip Shanahan (1874–1931), Irish Sinn Féin politician
* Phil Shanahan (1928–2012), Irish hurler
* Rebecca Shanahan, Australian artist and photographer
* Rob Shanahan (born 1966), American photographer and rock drummer
* Sean Shanahan (1951–2022), Canadian ice hockey player
* Steve Shanahan (born 1970), Canadian politician
* Terry Shanahan (born 1951), English former footballer
* Thomas Michael Shanahan (1934–2011), American judge
* Timothy Shanahan (disambiguation), various people
* Tom Shanahan (1925–2014), American broadcaster
* William Shanahan (1897–1954), Irish athlete