Heyerdahl is a surname. Notable people with the surname include:
Anders Heyerdahl (1832–1918), Norwegian violinist, composer and folk music collector Christopher Heyerdahl (born 1963), Canadian actor Elise Heyerdahl (1858–1921), Norwegian politician, teacher, and feminist Halvor Heyerdahl Rasch (1805–1883), Norwegian zoologist Hans Heyerdahl (1857–1913), Norwegian painter Phoebe Heyerdahl, character on Hey Arnold! Severin Andreas Heyerdahl (1870–1940), Norwegian physician Thor Heyerdahl (1914–2002), Norwegian ethnographer and adventurer
See also 2473 Heyerdahl, a main-belt asteroid Ayerdhal