Wave Master Inc. is a Japanese music business owned by the Sega Sammy Group. Originally a successor to Sega Digital Media, Wave Master's original role was to produce music for Sega's video games, however is has since branched out into other forms of entertainment such as film and television, and acts as a record label, managing Japanese musicians and artists.

Wave Master was also briefly a video game developer in its own right, releasing Switch and New Roommania: Porori Seishun for the PlayStation 2 (and the PS2 port of Roommania #203, originally developed as Sega Digital Media). The company became solely concerned with music in 2003, absorbing Sammy's music business, Underground Liberation Force, onm 1st April, 2005[1].

As well as having its own musicians and recording engineers, Wave Master also has a recording studio which has been hired by third-party organisations.

For a while Wave Master were maintaining a handful of sub-labels, the two prominent ones being Wave Master Artists (for regular musical acts signed up with the record label) and Wave Master Entertainment, used for video game, film and animation soundtracks. Both were established in late 2003[2].