Ninja Master's: Haō Ninpō Chō, (ニンジャマスターズ ～覇王忍法帖～, Ninja Master's Scrolls of the Supreme Ninja Arts), is a ninja-themed 2D fighting game produced by ADK and originally released in 1996 for the Neo Geo arcade and home platform. Ninja Master's was the sixth and final fighting game produced by ADK, following the four games in the World Heroes series and Aggressors of Dark Kombat. It was later featured in the 2008 compilation ADK Damashii for the PlayStation 2. Ninja Master's was also re-released on the Neo-Geo X handheld system in 2012, and for the Virtual Console in 2013. In 2019 it was released as part of Arcade Archives developed by Japanese company Hamster. As of 2021, Ninja Master's was released worldwide on Nintendo Switch and Xbox One. The PS4 version remains exclusive to Asia but includes both Japanese and English releases.

Ninja Master's follows the conventions of many previous 2D fighting games released for the Neo Geo. The player must defeat their opponent in combat in a series of best-two-out-of-three matches. Characters can change between using the character's weapon or fight hand-to-hand during the middle of combat. Like the Art of Fighting series, Ninja Master's features a super meter.