A •
Aidan Gallagher (born 2003), American actor •
Alexandra Gallagher, British multidisciplinary artist •
Ann Gallagher (born 1967), politician who served in Seanad Éireann •
Audrey Gallagher, trance singer
B • Benny Gallagher, Scottish singer/songwriter and member of
Gallagher and Lyle •
Bill Gallagher Sr. (1911–1990), a New Zealand inventor of the electric fence, founder of Gallagher Group (NZ) •
Bob Gallagher, several people •
Brendan Gallagher (born 1992), Canadian hockey player •
Brian O'Gallagher, Australian politician •
Bridie Gallagher (1924–2012), singer •
Bronagh Gallagher (born 1972), Irish singer and actress
C •
Cam Gallagher (born 1992), American baseball player •
Catherine Gallagher (born 1945), literary critic •
Charlie Gallagher, several people •
Colm Gallagher (died 1957), Irish politician •
Conor Gallagher (born 2000), English football player •
Conrad Gallagher (born 1971), chef and businessman from Letterkenny •
Cornelius Edward Gallagher (1921–2018), American politician •
Cynthia Gallagher, American artist
D •
Dan Gallagher (1957–2001), Canadian TV broadcaster •
David Gallagher, several people named David and Dave •
Deirdre Gallagher (born 1974), Irish race walker •
Delia Gallagher (born 1970), TV journalist •
Denis Gallagher (1922–2001), Irish politician •
Dennis J. Gallagher (1939–2022), American politician •
Dermot Gallagher (born 1957), Irish football referee
E •
Edward Gallagher, several people named Ed or Edward •
Ellen Gallagher (born 1965), American artist •
Eugene V. Gallagher (born 1950), American religious scholar
F •
Frank Gallagher, several people •
Fred Gallagher, several people
G •
Gerald Gallagher (1912–1941), medical doctor and British colonial administrator, of the Phoenix Islands Settlement Scheme •
Gerry Gallagher (born 1951), American footballer •
Gino Gallagher (c. 1963–1996), chief of staff of the militant revolutionary Irish National Liberation Army
H •
Helen Gallagher (1926–2024), American actress •
Helen Gallagher Solomon (died 1943), Ziegfeld girl who co-founded Gallagher's Steak House •
Harry Gallagher (1880–1975), Irish businessman and founder of
Urney Chocolates •
Hugh Gallagher, several people
J •
Jack Gallagher, several people •
Jackie Gallagher, male English footballer •
James Gallagher, several people •
Jared Gallagher (born 2002), Singaporean football player •
Jill Gallagher, Australian aboriginal worker •
Jim Gallagher, several people •
Jimmy Gallagher (1901–1971), Scottish-American soccer player •
Joe Gallagher (baseball) (1914–1998), American baseball player •
Joe Gallagher (boxing) (born 1968) •
Joe Gallagher (footballer) (born 1955) •
John Gallagher, several people •
Jon Gallagher (born 1996), Irish football player •
Joseph Gallagher (born 1964), Chess opening strategy theorist and one of six living Swiss chess grandmasters
K •
Kathryn Gallagher (born 1993), American singer and actress •
Katie Gallagher (1986–2022), fashion designer • Katie Gallagher (born 1971), penname of
Sarah Addison Allen •
Katy Gallagher (born 1970), Chief Minister of the Australian Capital Territory •
Kelly Sims Gallagher, American international affairs scholar •
Kenna Gallagher (1917–2011), British Foreign Office official and diplomat •
Kerri Gallagher (born 1989), American middle-distance runner •
Kevin R. Gallagher, American guitarist •
Kim Gallagher (1964–2002), American track and field Olympian
L • Leo Anthony Gallagher Jr., better known under his stage name
Gallagher (1946–2022), American comedian •
Leo Gallagher (1887–1963), American leftist lawyer and political candidate •
Liam Gallagher (born 1972), lead singer of the British band Oasis and formerly of Beady Eye •
Louis J. Gallagher (1885–1972), American Jesuit, educator, writer and translator
M •
Maggie Gallagher (born 1960), American commentator • Mark Gallagher, guitarist of the British heavy metal band
Raven •
Matt Gallagher, several people •
Megan Gallagher (born 1960), American actress •
Martin Gallagher (born 1952), New Zealand politician •
Mary Gallagher, American playwright, screenwriter, and novelist •
Michael Gallagher, several people named Michael or Mike, most notably political scientist
Michael Gallagher (academic), creator of the
Gallagher index •
Mick Gallagher (born 1945), musician with Ian Dury and the Blockheads
N •
Neil Gallagher, several people •
Noel Gallagher (born 1967), lead guitarist and backup singer of Oasis and currently with Noel Gallagher's High Flying Birds •
Norm Gallagher (1931–1999), Australian trade unionist
P •
PJ Gallagher, several people •
Pat Gallagher, several people named Pat or Patricia •
Patrick Gallagher, several people named Paddy or Patrick •
Paul Gallagher, several people •
Peta Gallagher (born 1977), Australian field hockey player •
Peter Gallagher, several people
R •
Raymond F. Gallagher (born 1939), New York state senator •
Richard B. Gallagher, Scottish academic publisher •
Richard F. Gallagher (1909–1995), American college basketball coach •
Richard "Skeets" Gallagher (1891–1955) •
Robert Gallagher, magazine photographer •
Rory Gallagher (1948–1995), Irish blues guitarist and singer
S •
Sean Gallagher, several people •
Shane Gallagher (born 1973), guitarist with bands +44 and Mercy Killers •
Shaun Gallagher, American philosopher •
Stephen Gallagher (born 1954), British author and screenwriter •
Steve Gallagher, former drummer for the band Tally Hall
T •
Teresa Gallagher, British actress •
Tess Gallagher (born 1943), American author •
Thomas Gallagher, several people named Thomas, Tom and Tommy •
Tim Gallagher, American ornithologist •
Tony Gallagher (businessman) (born 1951), British billionaire property developer •
Trace Gallagher (born 1961), Fox News anchor •
Ty Gallagher (born 2003), American ice hockey player •
Tysie Gallagher (born 1998), English professional boxer
W •
Wes Gallagher (1921–1997), American journalist and general manager of the Associated Press •
William Gallagher, several people == Fictional characters ==