Klarwein is a surname. Notable people with the surname include:
Franz Klarwein (1914–1991), German tenor Jason Klarwein (born c. 1976), Australian actor, director and producer Mati Klarwein (1932–2002), French painter Michaela Klarwein (born 1943 or 1946), German actress Ossip Klarwein (1893–1970), Polish-born German-Israeli architect