John McKinney is the name of:
- John McKinney, winner of the 19th Scripps National Spelling Bee in 1946
- John McKinney (Florida judge), United States federal judge
- John T. McKinney (1785–1837), Indiana Supreme Court judge
- John P. McKinney, Connecticut State Senator
- John McKinney (Michigan politician), Michigan Secretary of State and Treasurer
- John F. McKinney (1827–1903), U.S. Representative from Ohio
- John R. McKinney (1921–1997), Medal of Honor in World War II during the campaign to recapture the Philippines from Japanese forces in 1945