Hiroyuki Kojima is a Japanese mixed martial artist. He competed in the Welterweight division.
|- | Draw | align=center| 4âÂÂ4âÂÂ1 | Takaharu Murahama | Draw | | | align=center| 2 | align=center| 5:00 | Setagaya, Tokyo, Japan | |- | Loss | align=center| 4âÂÂ4 | Tetsuji Kato | TKO (punches) | | | align=center| 2 | align=center| 4:28 | Tokyo, Japan | |- | Win | align=center| 4âÂÂ3 | Saburo Kawakatsu | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan |<small>Lightweight bout.</small> |- | Win | align=center| 3âÂÂ3 | Isao Tanimura | Technical Submission (kimura) | | | align=center| 1 | align=center| 4:37 | Tokyo, Japan | |- | Loss | align=center| 2âÂÂ3 | Takaharu Murahama | KO (punch) | | | align=center| 1 | align=center| 2:31 | Tokyo, Japan | |- | Loss | align=center| 2âÂÂ2 | Hayato Sakurai | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan |<small>Return to Welterweight.</small> |- | Loss | align=center| 2âÂÂ1 | Tetsuji Kato | Decision (unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan |<small>Lightweight debut.</small> |- | Win | align=center| 2âÂÂ0 | Yuji Fujita | Decision (unanimous) | | | align=center| 3 | align=center| 3:00 | Tokyo, Japan | |- | Win | align=center| 1âÂÂ0 | Yuzo Tateishi | Submission (kimura) | | | align=center| 1 | align=center| 3:00 | Tokyo, Japan |