Lootens or Looten is a surname. Notable people with the surname include:
Charles L. Lootens (1900–1994), American sound engineer Christophe Looten (born 1958), French composer Jan Looten (1617/1618–c.1681), Dutch landscape painter Julien Lootens (1876–1942), Belgian cyclist Lena Lootens, Dutch soprano Louis Aloysius Lootens (1827–1898), Belgian-born Canadian Catholic prelate