John Nugent may refer to:

• John Nugent (journalist) (1821–1880), journalist and agent of United States President James Buchanan
• John F. Nugent (1868–1931), United States Senator from Idaho
• John Cullen Nugent (1921–2014), Canadian sculptor
• John Nugent Fitch (1840–1927), botanical illustrator
• John Nugent (footballer), English-born footballer for Notts County
• John Dillon Nugent (1869–1940), Irish nationalist politician
• John Valentine Nugent (1796–1874), Irish-born educator, journalist and political figure in Newfoundland
• John Nugent, 5th Earl of Westmeath (1671–1754), Irish nobleman and soldier
• John P. Nugent, American labor organizer and politician from New York
• J. C. Nugent (John Charles Nugent, 1868–1947), American actor, director, and screenwriter