The 666 Disorder Openweight Championship is a professional wrestling championship and the top singles accomplishment in the Japanese promotion Wrestling of Darkness 666, established in 2018.

Wrestling of Darkness 666 , also known as the Wrestling of Darkness Organization 666 and often referred to simply as 666 or Triple Six, is a Japanese professional wrestling promotion based in Shinjuku, Tokyo, Japan. The promotion was founded in 2003 by Onryo and Qp-Crazy frontman The Crazy SKB.