WWE Heat (formerly known as Sunday Night Heat and also known as Heat) is an American professional wrestling television program that was produced by World Wrestling Entertainment (WWE) and aired from August 2, 1998 to May 30, 2008. Originally produced under the World Wrestling Federation (WWF) banner, it aired on USA Network (1998–2000), MTV (2000–2003), and TNN/Spike TV (2003–2005) in the United States, CTV Sportsnet in Canada, and Channel 4, Sky1, and Sky Sports in the United Kingdom. From 2002, due to the WWE brand extension, Heat served as a supplementary show to the Raw brand, focusing more exclusively on its mid-card performers and matches, and was recorded before the week's television taping of Raw.

Heat was most recently streamed on WWE.com on Friday afternoons for North American viewers from 2005 to 2008. However, the show was still televised internationally and showed in the United Kingdom on Channel 4 and then later on Sky Sports 3, Australia on Fox8, India on TEN Sports, Germany on Premiere Sport Portal, France on Action, Spain on Sportmania and C+ Deportes -both channels from Digital+, the Middle East on ShowSports4, the Philippines on Jack TV, and Japan on J Sports. The final episode was uploaded to WWE.com. The show was replaced internationally with WWE Vintage Collection, a program featuring classic matches.

On May 7, 2018, the first 52 episodes of WWE Heat were made available to stream on the WWE Network.