Marthinus or Martinus is an old Dutch or Danish male given name - a latinised form of Martin. Notable people with this name include: Marthinus Bekker (born 1933), South African Navy officer Marthinus Jacobus Oosthuizen (1818–1897), South African voortrekker Marthinus Otto (born 1980), South African cricketer Marthinus du Plessis (born 1932), South African pentathlete Marthinus Wessel Pretorius (1819–1901), South African politician Marthinus Prinsloo (1838-1903), Orange Free State farmer, politician and commander-in-chief in the Second Boer War Marthinus Nikolaas Ras (1853–1900), South African farmer Marthinus van Schalkwyk (born 1959), South African politician Marthinus Theunis Steyn (1857–1916), South African lawyer, politician, and statesman Marthinus Strydom (born 1965), South African investor Martinus Thomsen (born 1890), Danish author, philosopher and mystic. Marthinus Versfeld or Martin Versfeld (1909–1995), South African philosopher