Wolmarans is a surname of Dutch origin. People with that name include:
Fritz Wolmarans (born 1986), South African tennis player
Maria Magdalene "Ria" Wolmarans (died 1996), South African murder victim of Mariëtte Bosch
Mariëtte Wolmarans (born Mariëtte Bosch, 1950–2001), South African murderer
Nick Wolmarans (1916–94), South African boxer
Willie Wolmarans (active 1992–93), South African Army officer