Koji Takeuchi (born May 29, 1974) is a Japanese mixed martial artist. He competed in the Welterweight division.
|- | Win | align=center| 7âÂÂ8âÂÂ5 | Hiroshi Kozakai | Submission (rear-naked choke) | Pancrase: Sapporo | | align=center| 1 | align=center| 1:24 | Sapporo, Hokkaido, Japan | |- | Win | align=center| 6âÂÂ8âÂÂ5 | Hyung-Seok Lee | Submission (guillotine choke) | PRO Fighting: PRO FC 9 | | align=center| 2 | align=center| 2:06 | Taipei, Taiwan | |- | Win | align=center| 5âÂÂ8âÂÂ5 | Hidekazu Asakura | Decision (unanimous) | Bout: Bout 15 | | align=center| 2 | align=center| 5:00 | Hakodate, Hokkaido, Japan | |- | Win | align=center| 4âÂÂ8âÂÂ5 | Hidekazu Asakura | Decision (majority) | BM 6: Battle Mix 6 | | align=center| 2 | align=center| 5:00 | Sapporo, Hokkaido, Japan | |- | Loss | align=center| 3âÂÂ8âÂÂ5 | Kabuto Kokage | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 3âÂÂ7âÂÂ5 | Komei Okada | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 3âÂÂ6âÂÂ5 | Wataru Miki | Submission (armbar) | | | align=center| 1 | align=center| 4:11 | Setagaya, Tokyo, Japan | |- | Loss | align=center| 2âÂÂ6âÂÂ5 | Ganjo Tentsuku | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 2âÂÂ5âÂÂ5 | Tashiro Nishiuchi | Draw | | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 2âÂÂ5âÂÂ4 | Masato Fujiwara | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 2âÂÂ4âÂÂ4 | Hiroshi Tsuruya | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 2âÂÂ3âÂÂ4 | Takeshi Yamazaki | Decision (majority) | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan | |- | Draw | align=center| 2âÂÂ2âÂÂ4 | Hideki Kadowaki | Draw | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 2âÂÂ2âÂÂ3 | Takaharu Murahama | Draw | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 2âÂÂ2âÂÂ2 | Takumi Nakayama | Draw | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 2âÂÂ2âÂÂ1 | Makoto Ishikawa | Decision (majority) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 1âÂÂ2âÂÂ1 | Tetsuharu Ikei | Draw | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan | |- | Win | align=center| 1âÂÂ2 | Mitsuo Matsumoto | Submission (triangle choke) | | | align=center| 2 | align=center| 1:30 | Setagaya, Tokyo, Japan | |- | Loss | align=center| 0âÂÂ2 | Kazuya Abe | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 0âÂÂ1 | Kohei Yasumi | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan |