Power Ring is the name of several supervillains appearing in American comic books published by DC Comics. The supervillains are alternate reality counterparts of Green Lanterns Hal Jordan, Kyle Rayner, and John Stewart, respectively. Originally residing on Earth-Three, which was subsequently destroyed during the 12-issue Crisis on Infinite Earths limited series, Power Ring, along with the other Syndicate members, end up being re-created in the Anti-Matter Universe's Earth.