John McDermott
John McDermott may refer to:
- John McDermott (heavyweight boxer), English boxer
- John McDermott (featherweight boxer), Scottish boxer
- John McDermott (English footballer), former Grimsby Town footballer
- John McDermott (Gaelic footballer), former Meath Gaelic footballer
- John McDermott (director), American film director and screenwriter
- John McDermott (Australian footballer), Australian rules footballer
- John McDermott (golfer), American golfer
- John McDermott (American artist), American illustrator and author
- John McDermott (runner), American marathoner
- John McDermott (singer), Scottish-Canadian singer
- John F. McDermott, American psychiatrist
- John J. McDermott (philosopher), distinguished professor at Texas A&M University
- John McDermott (Scottish artist), Scottish artist and veteran affairs activist