Harold Irving June (1895–1962) was a machinist, an aviator, a test pilot, and an explorer in Antarctica. He is best known for his 1928-1930 service in the first Antarctic expedition of Admiral Richard E. Byrd. Sitting in the co-pilot's seat with supplemental radio duties, he flew with Byrd, pilot Bernt Balchen, and photographer Ashley McKinley over the South Pole on November 29, 1929.