- Country: Japan
- Genres: Drama, Family, Romance
- Release: 2006-01-21
- Director: Takashi Koizumi
- Writers: Takashi Koizumi , Yôko Ogawa
- Language: Japanese
- Stars: Akira Terao , Eri Fukatsu , Takanari Saito , Hidetaka Yoshioka , Ruriko Asaoka , Hisashi Igawa , Ryôya Abe , Shô Abe , Takayasu Andô , Yuni Aritomi
- Runtime: 117 min
- Awards: 2 wins & 1 nomination
- AKA: 博士的愛情方程式 (Hong Kong) , Любимое уравнение профессора (Russian Federation) , Hakase no aishita sûshiki , 博士の愛した数式 (Japan) , The Professor and His Beloved Equation
- Plot: The story of a single mother housekeeper and a mathematics professor, who has a brain damage.
- IMDB:tt0498505
The Professor and His Beloved Equation Cast · · · ALL
Takashi Koizumi
Director
Akira Terao
Professor
Eri Fukatsu
Kyoko
Ruriko Asaoka
Widow
Hidetaka Yoshioka
Root
Hisashi Igawa
Housekeeper Agent
Takanari Saito
Root (young)