John Keenan

John Keenan may refer to:
 * John F. Keenan (born 1929), 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

Others

 * John Keenan (Holby Blue), fictional character in the British television series Holby Blue