Keiko Han (潘 恵子, Han Keiko?) is a seiyū born on April 5, 1953 in Tokyo, Japan. She attended Tōyō Eiwa Jogakuin, going on to study theatre arts at Nihon University. She gained experience in theater while attending school by obtaining work through Aoni Production, singing the theme songs in productions such as Story of the Alps: My Annette and Kazoku Robinson Hyōryūki Fushigi na Shima no Furōne. Han is a fortune teller of Western horoscopes, and has written several books on the subject. She is employed by the talent management firm 81 Produce.
She is most known for the roles of Lalah Sune (Mobile Suit Gundam), Saori Kido (Saint Seiya), and Luna and Queen Beryl (Sailor Moon).