Sithu Myint Myint Khin (Burmese: မြင့်မြင့်ခင်, pronounced [mjɪ̰ɰ̃ mjɪ̰ɰ̃ kʰɪ̀ɰ̃]; nicknamed Baby; born Khin Kyi ([kʰɪ̀ɰ̃ tɕì]) born 13 August 1934) is a five-time Myanmar Academy Award and Myanmar Academy Award (Lifetime Achievement Award - Everlasting Outstanding Honorary Award) winning Burmese film actress who is considered one of the most talented actors of Burmese cinema.

Myint Myint Khin was born Khin Kyi to Daw Saw Kyi and U Po Min, in Thanlyin in 1934, during the waning days of the British colonial era in Myanmar.

Not only was she one of the main leading actresses in the 1950s, Myint Myint Khin went on to win multiple (five) Burmese Academy Awards in her nearly five-decade-long career—a feat still unmatched among Burmese actresses.

Her most famous hit, Naban Hsan, does remain a Burmese standard, having been covered numerous times by later singers, most famously by her singer daughter May Sweet.

Her husband Khin Maung Nyunt died in February 2010.