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
 * Brendan Shanahan (author) (born 1979), Australian author
 * 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