• John Gallagher (Dying Fetus), vocalist/guitarist for the American death metal band Dying Fetus
• John Gallagher Jr., actor/musician
• John Gallagher III
  John Gallagher III
  John S. Gallagher III is an American astronomer.He was raised near New York city and received his undergraduate education at Princeton University. He performed his graduate work at the University of Wisconsin–Madison, and was awarded a Ph.D in 1972...
  
  , astronomer
• John Gallagher (baseball)
  John Gallagher (baseball)
  John Carroll Gallagher was a Major League Baseball second baseman who played for the Baltimore Terrapins of the Federal League in .-External links:...
  
   (1892–1952), MLB player
• John Gallagher (basketball coach)
  John Gallagher (basketball coach)
  - References :...
  
  , head men's basketball coach at the University of Hartford
• John Gallagher (cartoonist)
  John Gallagher (cartoonist)
  John Gallagher is a cartoonist. He received the National Cartoonist Society Gag Cartoon Award for 1957 and 1971 for his work.-External links:*...
  
  
• John Gallagher (geologist)
  John Gallagher (geologist)
  John Edward Patrick Gallagher, OC was a Canadian geologist and businessman. Born in Winnipeg, Gallagher attended the University of Manitoba. He became a petroleum geologist working for a number of multinationals in California, Egypt, Latin America and Canada searching for oil.In 1950, he...
  
   (born 1916)
• John Gallagher (golfer)
  John Gallagher (golfer)
  John Gallagher is a Scottish professional golfer on the PGA EuroPro Tour. In April 2009 he earned tour playing privileges when he shot a closing one-under par 70 in final qualifying at Frilford Heath....
  
  
• John Gallagher (ice hockey)
  John Gallagher (ice hockey)
  John James Gallagher was a professional ice hockey player who played 204 games in the National Hockey League. He played with the Montreal Maroons, Detroit Red Wings, and New York Americans. He help the Red Wings win the Stanley Cup in 1937.-References:...
  
  
• John Gallagher (barrister)
  John Gallagher (barrister)
  John Gallagher QC is an Australian barrister. He was a Director of the Board of the public broadcaster, the Australian Broadcasting Corporation from 1999 to 2008....
  
  , member of the board of the Australian Broadcasting Corporation
• John Gallagher (rugby league) (born 1964)
• John Anthony Gallagher
  John Anthony Gallagher
  John Anthony Gallagher is a former rugby union All Black. He was born in London.Gallagher was one of the first of a succession of All Blacks to switch codes to rugby league....
  
  , British-born All Black
• John Andrew Gallagher
  John Andrew Gallagher
  John "Jack" Andrew Gallagher, FBA was a distinguished historian of the British Empire who between 1963 and 1970 held the Beit Professorship of Commonwealth History at the University of Oxford and from 1971 until his death was the Vere Harmsworth Professor of Imperial and Naval History at the...
  
  , British Historian
• Jack Gallagher, comedian, actor and writer
• John B. Gallagher (cartoonist)

See also

• Jack Gallagher (disambiguation)
• Jackie Gallagher (disambiguation)
• John Gallacher
  John Gallacher
  John Gallacher, Baron Gallacher was a British co-operative official and politician.Gallacher born in Alexandria, Dunbartonshire, was educated at St. Patrick's High School, Dumbarton and worked for Vale of Leven Co-operative Society before World War II...
  
  , British politician