The Wednesday Night War or Wednesday Night Wars was a period of mainstream televised American professional wrestling in which All Elite Wrestling (AEW)'s Dynamite debuted on TNT opposite WWE's NXT on the USA Network in a competition for Nielsen ratings each week. The ratings war lasted from October 2, 2019, to April 7, 2021.

NXT is a brand of the American professional wrestling promotion WWE that was introduced on February 23, 2010. Brands are divisions of WWE's roster where wrestlers are assigned to perform on a weekly basis when a brand extension is in effect. Wrestlers assigned to NXT primarily appear on the brand's weekly television program, NXT. It serves as a developmental brand for Raw and SmackDown, which are WWE's primary brands considered as the main roster. Due to its developmental status, NXT operates regardless if there is a brand extension in effect or not.