John Sweeney

• John Sweeney (Australian politician) (1863–1947), member of the New South Wales Legislative Assembly
• John Sweeney (Canadian politician) (1931–2001), Canadian, politician and educator
• John Sweeney (labor leader) (1934–2021), American president of AFL-CIO
• John Sweeney (Ohio politician), member of the Ohio House of Representatives
• John A. Sweeney (born 1941), American politician in the New Jersey General Assembly
• John Bernard Sweeney (1911–1981), judge of the Australian Industrial Court
• John E. Sweeney (born 1955), U.S. Representative from New York
• John James Sweeney (born 1927), Pennsylvania politician
• John Sweeny (judge), American judge in New York State

• John Sweeney, British serial killer, subject of the book Living with a Serial Killer (2017) and TV adaptation Until I Kill You (2024)
• John Thomas Sweeney (born 1956), former boyfriend and killer of American actress Dominique Dunne

• John Sweeney (journalist) (born 1958), investigative journalist and writer
• John A. H. Sweeney (1930–2007), American museum curator and author
• John J. Sweeney (professional speaker) (born 1965), American keynote speaker and author

• John Sweeney (footballer), Scottish footballer, played for Dunfermline Athletic FC in the 1961 Scottish Cup Final
• John Sweeney (police officer) of the Metropolitan Police Service, detective superintendent in charge of Operation Withern
• John Sweeny (bishop) (1821–1901), Canadian Roman Catholic bishop
• John Sweeny, settler for whom the town of Sweeny, Texas, US, was named

• John Swinney (born 1964), Scottish politician

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