Shiko Yamashita (born December 22, 1973) is a Japanese mixed martial artist. He competed in the welterweight and middleweight divisions.
|- | Loss | align=center| 10-5-3 | Takuya Wada | Submission (Rear-Naked Choke) | | | align=center| 3 | align=center| 4:26 | Tokyo, Japan | |- | Loss | align=center| 10-4-3 | Motoki Miyazawa | Decision (Unanimous) | GCM: Cage Force 7 | | align=center| 3 | align=center| 5:00 | Tokyo, Japan |<small>Return to Welterweight.</small> |- | Loss | align=center| 10-3-3 | Siyar Bahadurzada | Decision (Unanimous) | | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 10-2-3 | Grazhuydas Smailis | DQ (Grabbing the Ropes) | | | align=center| 2 | align=center| 3:21 | Tokyo, Japan | |- | Win | align=center| 9-2-3 | Dustin Denes | Decision (Unanimous) | AFC 16: Absolute Fighting Championships 16 | | align=center| 3 | align=center| 5:00 | Boca Raton, Florida, United States | |- | Win | align=center| 8-2-3 | David Bielkheden | Decision (Majority) | | | align=center| 3 | align=center| 5:00 | Hakata-ku, Fukuoka, Japan | |- | Draw | align=center| 7-2-3 | Martijn de Jong | Draw | | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Draw | align=center| 7-2-2 | Dustin Denes | Technical Draw | | | align=center| 1 | align=center| 3:48 | Tokyo, Japan | |- | Draw | align=center| 7-2-1 | Scott Henze | Draw | HOOKnSHOOT: Relentless | | align=center| 3 | align=center| 5:00 | Evansville, Indiana, United States |<small>Return to Middleweight.</small> |- | Win | align=center| 7-2 | Jun Kitagawa | Decision (Majority) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Loss | align=center| 6-2 | Curtis Stout | Decision (Unanimous) | HOOKnSHOOT: Kings 1 | | align=center| 2 | align=center| 5:00 | Evansville, Indiana, United States | |- | Win | align=center| 6-1 | Leopoldo Serao | Decision (Majority) | | | align=center| 3 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 5-1 | Ryuta Sakurai | Decision (Unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan | |- | Win | align=center| 4-1 | Jeremy Bennett | Submission (Punches) | | | align=center| 2 | align=center| 2:36 | Setagaya, Tokyo, Japan | |- | Win | align=center| 3-1 | Matthias Riccio | Submission (Armbar) | | | align=center| 1 | align=center| 1:18 | Setagaya, Tokyo, Japan |<small>Return to Welterweight.</small> |- | Loss | align=center| 2-1 | Izuru Takeuchi | Decision (Unanimous) | | | align=center| 2 | align=center| 5:00 | Tokyo, Japan |<small>Middleweight debut.</small> |- | Win | align=center| 2-0 | Ryota Ibaraki | Submission (Armbar) | | | align=center| 1 | align=center| 2:15 | Setagaya, Tokyo, Japan | |- | Win | align=center| 1-0 | Koichiro Kawaguchi | TKO (Armbar) | Daidojuku: WARS 5 | | align=center| 3 | align=center| 0:34 | Japan |