Marthinus Prinsloo (13 February 1751, Hexrivier â 1825, Cape Colony) was the President of the Republic of Graaff-Reinet from 1795 to 1796 when the British seized the Dutch Cape Colony.
His second cousin, Hermanus Steyn, was President of the Republic of Swellendam in 1795.
He was the father of Hendrik Frederik Prinsloo (1784-1816), who was hanged in 1816 for his involvement in the Slagtersnek Rebellion.