Hard Justice (2005) was a professional wrestling pay-per-view (PPV) event produced by the Total Nonstop Action Wrestling (TNA) promotion, which took place on May 15, 2005 at the TNA Impact! Zone in Orlando, Florida. It was the first event under the Hard Justice chronology and the fifth event in the 2005 TNA PPV schedule. Eight matches and one pre-show match were featured on the event's card.

The main event was for the NWA World Heavyweight Championship between then-champion Jeff Jarrett and the challenger A.J. Styles with Tito Ortiz as Special Guest Referee. Styles ended up winning the bout, thus winning the championship for the third time. TNA held a Twenty-Man Gauntlet for the Gold to become the number one contender to the NWA World Heavyweight Championship. The match came down to Abyss and Ron Killings, with Abyss coming out as the victor. The TNA X Division Championship defense by Christopher Daniels against Shocker was another highly promoted match for the event. Daniels won the bout, successfully retaining the title. The Naturals (Andy Douglas and Chase Stevens) defended the NWA World Tag Team Championship against America's Most Wanted (Chris Harris and James Storm; AMW) on the card. The Naturals ended up retaining the tag team championship over AMW.