Night of Champions (2015) was a professional wrestling pay-per-view and livestreaming show made by WWE. It took place on September 20, 2015 at the Toyota Center in Houston, Texas. It was the ninth Night of Champions event held by WWE and the last to happen yearly. The following year, it was replaced by WWE Clash of Champions. The Night of Champions name returned for one more event in 2023.
The main event saw Seth Rollins defeat Sting to keep his WWE World Heavyweight Championship. This was Sting's last match in WWE. He suffered an injury in the match and retired from wrestling months later. He eventually returned to in-ring competition for All Elite Wrestling (AEW) in 2021.