Kyle Greenwood is a Canadian professional wrestler and actor better known by the ring name Kyle O'Reilly. He is currently signed to All Elite Wrestling (AEW), where he is a member of The Conglomeration. He is also known for working in Ring of Honor (ROH) from 2009 to 2017, and WWE (where he performed on their NXT brand) from 2017 to 2021, using the same ring name in both companies. He is a record three-time NXT Tag Team Champion, and was a founding member of The Undisputed Era.

He also worked for New Japan Pro-Wrestling (NJPW) and competed for several independent promotions, most notably Pro Wrestling Guerrilla (PWG). In ROH, he is a one-time ROH World Champion and three-time ROH World Tag Team Champion alongside Bobby Fish as reDRagon. In PWG he is a one-time PWG World Champion and the winner of the promotion's 2013 Battle of Los Angeles. After his WWE contract expired, Greenwood signed with AEW in December 2021.