Hassell, also von Hassell, is an English and German surname. Notable people with the surname include the following:
Albert Young Hassell (1841-1918), Australian pastoralist and politicianBill Hassell (born 1943), Australian former politicianBobby Hassell (born 1980), English footballer with Mansfield Town and BarnsleyGerald Hassell (born 1952), American bankerJohn Hassell (artist) (c. 1767 – 1825), English artistJohn Hassell (settler) (1788-1883), Australian pastoralistJon Hassell (born 1937), American trumpet player and composerLeroy R. Hassell, Sr. (1955–2011), American judge; first African-American Chief Justice of VirginiaMichael Hassell (born 1942), a British biologist, noted for his work in population ecology, especially in insectsRandall G. Hassell, American karate expertTrenton Hassell (born 1979), American basketball playerUlrich von Hassell (1881–1944), German diplomat; executed for his participation in the 20 July assassination plot against Hitler