- half inning (1866)
- half swing (1895)
- Hall of Famer (1935)
- hall of shame (1938)
- handle a pitcher (1892)
- handle the bat (1868)
- hang up one’s spikes (1917)
- headhunter (1958)
- heart of the order (1913)
- heart of the plate (1887)
- hesitation ball / hesitaton pitch (1925)
- hidden ball trick (1896)
- high-ball hitter (1887)
- high fly (1867)
- high hard one (1920)
- his umps (1897)
- hit and run (1895)
- hit and run game (1894)
- hit behind the runner (1898)
- hitch in his swing (1910)
- hit for the cycle (1920)
- hit in a pinch (1890)
- Hitless Wonders (1902)
- hit off the fists (1940)
- hit one’s weight (1991)
- hit to all fields (1900)
- hold a runner (1881)
- hole in his swing (1978)
- home-and-home (1858)
- home-field advantage (1920)
- home game (1871)
- home half (1883)
- home plate (1866)
- homer (1868)
- home run ball (1886)
- home run king (1900)
- home run swing (1898)
- home run trot (1890)
- home team (1875)
- hot grounder (1866)
- hot stove league (1901)
- House That Ruth Built (1923)
- human rain delay (1980)