Propper is a surname. Notable people with the name include:
Robin Pröpper (born 1993), Dutch footballer Davy Pröpper (born 1993), Dutch footballer Carsten Pröpper (born 1967), German footballer Thomas Pröpper (born 1970), German footballer Günter Pröpper (born 1941), German footballer Theodor Pröpper (1896–1979), German church organist and composer Henry Pröpper (1906–1995), Dutch military officer Eduardo Propper de Callejón (1895–1972), Spanish diplomat Katherine Propper (born 1993), American film director and screenwriter Carol Propper, British economist Cynthia Propper (1926–1982), American writer