The reality series alum died Thursday morning at age 29, The Hollywood Reporter has learned.
Knight’s cause of death is not yet known, but reports have indicated that he was found dead by friends Thursday morning after partying the previous night.
He starred in MTV series The Real World in 2010 during the New Orleans edition before landing a spot on The Challenge.
“We are saddened to hear the news of the passing of Ryan Knight,” said MTV in a statement. “Our thoughts and condolences are with his family and friends at this difficult time.”