John McDermott

John McDermott may refer to:
 * John McDermott (boxer) (born 1980), British boxer
 * John McDermott (English footballer) (born 1969), former Grimsby Town footballer
 * John McDermott (Gaelic footballer), former Meath Gaelic footballer
 * John McDermott (director) (1893–1946), American film director and screenwriter
 * John McDermott (Australian footballer) (1872–1925), Australian rules footballer
 * John McDermott (golfer) (1891–1971), American golfer
 * John McDermott (American artist) (1919–1977), American illustrator and author
 * John McDermott (runner) (1880–1948), American marathoner
 * John McDermott (singer) (born 1955), Scottish-Canadian singer
 * John F. McDermott, American psychiatrist
 * John J. McDermott (philosopher) (1932–2018), distinguished professor at Texas A&M University
 * John McDermott (Scottish artist) (born 1957), Scottish artist and veteran affairs activist