Houlihan may refer to:
People:
- Adam Houlihan (born 1978), former Australian rules footballer
- Carolyn Houlihan (born 1957), American actress
- Christopher Houlihan (born 1987), American concert organist
- Con Houlihan (1925–2012), Irish sportswriter
- Damian Houlihan (born 1975), former Australian rules footballer
- Gerard Houlihan, Irish retired Gaelic footballer player
- Jim Houlihan (1898–1967), Irish sportsperson
- Joan Houlihan, American poet
- John C. Houlihan (1910–1986), the 43rd mayor of Oakland, California
- Mike Houlihan (born 1969), retired Irish sportsperson
- Pat Houlihan (1929–2006), English snooker player
- Patrick Houlihan (1889–1963), Irish politician
- Ryan Houlihan (born 1982), Australian rules footballer
- Tim Houlihan (born 1989), Australian rules footballer
- Timmy Houlihan (born 1982), Irish sportsperson
Other:
- Houlihan Lokey, independent, advisory-focused, global investment bank
- Houlihan Stadium or Tampa Stadium, a sports venue in Tampa, Florida, USA
- Houlihan Smith & Company, investment banking firm
- Jim Houlihan Park at Jack Coffey Field, a baseball venue on the Rose Hill campus of Fordham University in Bronx, New York, USA
- Cathleen ni Houlihan, one-act play written by Irish playwright William Butler Yeats
- Kathleen Ni Houlihan, a mythical symbol and emblem of Irish nationalism found in literature and art