The East Japan Rookie King Tournament (東日本新人王, Higashinihon Shinjin-ō) is a yearly event held in Tokyo, Japan among Class C licensed boxers.
Class C licensed boxers are boxers that are allowed to fight four round matches. The tournament consists of four round matches until the finals, which is a six round match. Winners of the East Japan Rookie King Tournament are able to face against the West Japan Rookie King in the All Japan Rookie King Tournament.