Chaos is a professional wrestling stable, primarily performing in the New Japan Pro-Wrestling (NJPW) promotion and All Elite Wrestling (AEW). The group was formed in 2009, when nearly all the members of the Great Bash Heel (G.B.H) stable turned on leader Togi Makabe and reformed under new leader Shinsuke Nakamura. Soon after, the new group was named Chaos, with Nakamura as the leader. As the leader of Chaos, Nakamura was one of NJPW's top wrestlers, winning the IWGP Heavyweight Championship and the IWGP Intercontinental Championship as well as the 2011 G1 Climax and the 2014 New Japan Cup.

Professional wrestling has accrued a considerable amount of jargon throughout its existence. Much of it stems from the industry's origins in the days of carnivals and circuses. In the past, professional wrestlers used such terms in the presence of fans so as not to reveal the worked nature of the business. Into the 21st century, widespread discussion on the Internet has popularized these terms. Many of the terms refer to the financial aspects of professional wrestling in addition to in-ring terms.