| Fullname: | Masamitsu Tsuchida |
| Kanji: | 土田 正光 |
| Birth Date: | 1 August 1944 |
| Birth Place: |  Gifu Prefecture, Japan |
| Residence: | Nagoya, Japan |
| Teacher: | Kitani Minoru |
| Rank: | 9 dan |
| Turnedpro: | 1961 |
| Affiliation: | Nihon Ki-in |
is a professional Japanese 9 dan Go player.[1]
In 1961, Tsuchida became a pupil at the dojo of Minoru Kitani, and reached 9 dan in 1979.[2] [3] His pupils at the Nihon Ki-in have included Hideki Matsuoka, Masaki Ogata and Yoshika Mizuno.[4] Tsuchida is an affiliate of the Nihon Ki-in in Nagoya, Japan.