| Tomohisa Ōtani | |
| Position: | Pitcher / Coach |
| Team: | Chiba Lotte Marines |
| Number: | 85 |
| Birth Date: | 14 February 1985 |
| Birth Place: | Hyōgo Prefecture |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | NPB |
| Debutdate: | April 23 |
| Debutyear: | 2010 |
| Debutteam: | Chiba Lotte Marines |
| Finaldate: | September 20 |
| Finalyear: | 2019 |
| Finalteam: | Chiba Lotte Marines |
| Finalleague: | NPB |
| Statyear: | 2020 season |
| Statleague: | NPB |
| Stat1label: | Win–loss record |
| Stat1value: | 20–34 |
| Stat2label: | ERA |
| Stat2value: | 3.67 |
| Stat3label: | Strikeouts |
| Stat3value: | 332 |
| Stat4label: | Saves |
| Stat4value: | 0 |
| Stat5label: | Holds |
| Stat5value: | 120 |
| Teams: | |
Tomohisa Ōtani (大谷 智久, born February 14, 1985, in Hyōgo Prefecture) is a Japanese former professional baseball pitcher who is currently a coach for the Chiba Lotte Marines of Nippon Professional Baseball (NPB). He has played in his entire career with the NPB for the Marines.
Chiba Lotte Marines selected Otani with the second selection in the .[1]
On April 23, 2010, Otani made his NPB debut.
On December 2, 2020, Otani become a free agent.[2] On December 14, 2020, he announced his retirement and become coach for the Marines.[3]