James Leonard

James Leonard may refer to:


 * Bobo Leonard (James Leonard), American Negro League baseball player
 * James Leonard, co-host of The Two Norries podcast
 * James Leonard, one of the co-proprietors of the Beverly Cotton Manufactory
 * James A. Leonard (1841–1862), American chess master
 * James C. Leonard (1825–1891), Congregationalist minister in Australia
 * James E. Leonard, Chief of Department for the New York City Fire Department
 * James F. Leonard (1920–2020), United States Ambassador to the United Nations
 * James Weston Leonard (1853–1909), politician of southern Africa
 * Jim Leonard (American football, born 1910) (1910–1993), American football player and coach
 * Jim Leonard (photographer) (1950–2014), storm chaser, photographer and videographer
 * Jim Leonard (American football, born 1899) (1899–1978), American football lineman
 * Jimmy Leonard (born 1927), Irish politician