Januaria Constantino Keller (March 3, 1917 – December 11, 1991), better known by her stage name Carmen Rosales and by her nickname Mameng, was a noted Filipina actress and World War II guerilla fighter. Her acting career spanned the decades immediately before, during, and after World War II. Her tremendous commercial success and wide fan base before the war led to her being considered the original superstar of Philippine movies. Her stage name, Carmen Rosales, was taken from her hometown of Rosales in the province of Pangasinan.