Supercard of Honor IV was a professional wrestling event produced by Ring of Honor (ROH). It was the fourth Supercard of Honor and took place on April 3, 2009 at George R. Brown Convention Center in Houston, Texas. As with other Supercard of Honor events, it took place in the same weekend and same metropolitan area as WrestleMania 25.
Thirteen matches were contested as part of the event, the opening two of which were dark matches. In the main event, Jerry Lynn defeated Nigel McGuinness to claim the ROH World Championship. In another championship match, Kenta defeated Davey Richards to retain the GHC Junior Heavyweight Championship.