Tertius Bosch (born 14 March 1966 in Vereeniging, Transvaal) was a South African cricketer who played in one Test and two ODIs in 1992.
Bosch's official cause of death was Guillain-Barré syndrome, but there were allegations made of poisoning by his wife Karen Anne. In 2003, Bosch's sister applied to the supreme court to stop his widow from inheriting the estate. In 2005, his body was removed from Queensburgh cemetery for exhumation.