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 tremendous commercial success and wide fan base before the war led to her being considered the original superstar of Philippine movies.

As Carmen Rosales, she made her film debut was in Mahiwagang Binibini (1938) for Diwata Pictures, based on the zarzuela play of Atang dela Rama titled Ang Kiri.

Gerilyera was followed by Kaaway ng Bayan (1947) with Leopoldo Salcedo, which made Rosales the most sought-after actress of Philippine Movies.

Among her unforgettable roles included the spurned lover of Rogelio dela Rosa in Maalaala Mo Kaya (1954) and a club-singer in Ang Tangi Kong Pag-ibig (1955).

[7] However, the Japanese were able to persuade her to star in the 1944 film Tatlong Maria after they threatened to massacre a village in Pangasinan if she refused.