Yoshinobu Ota (born November 13, 1972) is a Japanese mixed martial artist. He competed in the Featherweight division.
|- | Loss | align=center| 4-6-3 | Seiji Ozuka | Submission (Straight Armbar) | GCM: Demolition 031227 | | align=center| 1 | align=center| 1:40 | Tokyo, Japan | |- | Draw | align=center| 4-5-3 | Daichi Fujiwara | Draw | | | align=center| 2 | align=center| 5:00 | Osaka, Osaka, Japan | |- | Loss | align=center| 4-5-2 | Miki Shida | Decision (Unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 4-4-2 | Miki Shida | Draw (Unanimous) | | | align=center| 2 | align=center| 5:00 | Osaka, Osaka, Japan | |- | Win | align=center| 4-4-1 | Noriyuki Takeuchi | Submission (Guillotine Choke) | | | align=center| 1 | align=center| 0:42 | Nagoya | |- | Loss | align=center| 3-4-1 | Naoyuki Kotani | Technical Submission (Rear-Naked Choke) | | | align=center| 1 | align=center| 1:41 | Kanagawa, Japan | |- | Draw | align=center| 3-3-1 | Takumi Yano | Draw | | | align=center| 2 | align=center| 5:00 | Osaka, Osaka, Japan | |- | Loss | align=center| 3-3 | Masahiro Oishi | Submission (Rear Naked Choke) | | | align=center| 2 | align=center| 2:48 | Tokyo, Japan | |- | Loss | align=center| 3-2 | Mamoru Yamaguchi | KO (Knee) | | | align=center| 3 | align=center| 2:21 | Yokohama, Kanagawa, Japan | |- | Win | align=center| 3-1 | Norio Nishiyama | Technical Submission (Rear-Naked Choke) | | | align=center| 1 | align=center| 0:28 | Tokyo, Japan | |- | Loss | align=center| 2-1 | Jin Akimoto | Decision (Unanimous) | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan | |- | Win | align=center| 2-0 | Norio Nishiyama | Decision (Unanimous) | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan | |- | Win | align=center| 1-0 | Hiroaki Yoshioka | Decision (Majority) | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan |