Momoi was born in Tokyo, Japan. At the age of 12, she traveled to London to study dance at the Royal Ballet Academy. After 3 years, she returned to Tokyo. She graduated from Japan's Bungakuza School of Dramatic Arts. In 1971, Momoi debuted in director Kon Ichikawa's Ai Futatabi (To Love Again). Her career has spanned 35 years and over 60 films.
As an actress, she has worked with directors including Akira Kurosawa (Kagemusha, 1980), Tatsumi Kumashiro (Seishun no Satetsu, 1974), Yoji Yamada (The Yellow Handkerchief, 1977 and Otoko wa Tsuraiyo, 1979), Shohei Imamura (Why Not?, 1981), Shunji Iwai (Swallowtail Butterfly, 1996), Jun Ichikawa (Tokyo Yakyoku, 1997), Mitani Koki (Welcome Back, Mr. McDonald, 1997), Yoshimitsu Morita (Like Asura, 2003) and Takashi Miike (IZO, Sukiyaki Western Django).
For her film performances in Japan, Momoi has won many awards. She has won the Japanese Academy Awards for Best Actress twice and Best Supporting Actress once and was selected Best Actress at the 1983 New York International Film Festival for her role in Giwaku (Suspicion).
Momoi has pursued various projects in producing, directing, screenwriting, and design in addition to her acting. She has also released some 15 record albums as a singer and is an essayist.
|1971||To Love Again||Momoyo|
|1977||The Yellow Handkerchief||Akemi Ogawa|
|1979||Tora-san, the Matchmaker||Hitomi|
|Mo hozue wa tsukanai||Mariko|
|Yūgure made||Sugiko Emori|
|1986||Final Take||Empress Akiko|
|1988||Kimurake no Hitobito||Noriko Kimura|
|1990||Ware ni utsu yoi ari||Ritsuko|
|1997||Welcome Back, Mr. McDonald||Takako Nakaura|
|1998||Daikaijū Tōkyō ni arawaru||Kimie Tadokoro|
|2005||Memoirs of a Geisha||Mother|
|The Sun||Empress Kojun|
|2006||Love and Honor||Ine Hatano|
|2007||Sukiyaki Western Django||Ruriko|
|2008||The Yellow Handkerchief||Motel Owner|
|The Ramen Girl||Mamasan (scenes deleted)|
|2010||Hong Kong Confidential||Amaya|
|2014||Oki - in the middle of the ocean||Oki|
|2016||Greetings from Fukushima|
|2017||Ghost in the Shell||Hairi Kusanagi|