A wave power generator is provided, and, more particularly, a wave power generator, which has a simple structure leading to improved cost efficiency and high energy conversion rate and is able to be installed in anywhere, so that practicality and a value of wave as a clean energy resource may be enhanced, is provided. The wave power generator includes a raft vessel configured to be in a shape of disk and filled with water; a water turbine configured to be installed on a central axis of the raft vessel; and a mooring chain configured to be connected to the raft vessel to thereby determine a location where the raft vessel is to float.