Kentaro Koyama (known as Kentaro Kobayashi from 1998 to 2001 due to marriage) is a video game composer and keyboardist. He is best-known for time with SEGA, starting around 1992/1993, composing for games like Virtua Cop, Gunblade NY & L.A. Machineguns, CRACKIN'DJ, Virtua Tennis 3 and most notably the 4 classic entries in the Virtual-On series. He left the company around 2009-2011 to join an unknown mobile game developer, and has since worked at ASOBIMO (most notably on Toram Online) and MIXI.

Koyama's work is typically inspired by frivolous pop, fusion, techno and Black music. His biggest influences are CASIOPEA, T-SQUARE, Masaya Matsuura and FPM.