| Sasaki Gensō Rōshi | |
| Birth Date: | 1947 |
| Birth Place: | Japan |
| Nationality: | Japanese |
| Religion: | Zen Buddhism |
| School: | Rinzai |
| Lineage: | Tenryū-ji |
| Rōshi | |
| Location: | Ryū-Un Zendō, Tokyo |
| Predecessor: | Ōmori Sōgen |
| Website: | http://www.ryu-un-zendo.org |
[1] is a Japanese Rinzai Rōshi, a successor in the Tenryū-ji line of Rinzai Zen, a teacher of Jikishinkage-ryū swordsmanship, and a calligrapher.
Sasaki Roshi founded the Ryu-Un-Zendo in Tokyo in 1984[1] and since 1992 he has been teaching at the Asahi Cultural Centre,[1] also located in Tokyo.