Keiko Han (潘恵子), born April 5, 1953, in Minato-ku, Tokyo, Japan, is a voice actress who played Luna in both the Sailor Moon anime and the live-action series. She also played the voice of Queen Beryl in Sailor Moon's first season. Some of her other anime roles include Saori Kido/Athena in Saint Seiya, Yayoi Yukino in Queen Millenia, and Lalah Sune in Mobile Suit Gundam and Mobile Suit Zeta Gundam.
She graduated with a degree in fine arts from Nihon University at a time when there were not as many female college graduates as there are nowadays. She is among the first idol voice actresses like Mitsuko Horie, with a lengthy resume which also includes her being an author of a number of books about Western astrology.
- She is an alumna of Toyo Eiwa Jogakuin, which was the inspiration for T·A Academy for Girls, the school Rei Hino attended in the Sailor Moon series.
- Her family name is also a common one in other parts of East Asia, e.g. China and Korea.