John Keenan

John Keenan may refer to:

• John F. Keenan (1929–2024), United States federal judge in New York
• John Keenan (bishop) (born 1964), Bishop of Paisley, Scotland
• John Keenan (Gaelic footballer) (born 1942), Irish retired sportsperson
• John Keenan (Medal of Honor) (c. 1840–1906), United States Army soldier during the Indian Wars
• John D. Keenan (born 1965), member of the Massachusetts House of Representatives
• John F. Keenan (state senator) (born 1964), member of the Massachusetts Senate
• John R. Keennan (1939–2015), baseball scout for the Los Angeles Dodgers club