Sunday Night Heat also known as Sunday Night HEAT or HEAT is the Sunday night professional wrestling show for World Wrestling Entertainment. It currently airs on Spike TV every Sunday night. It is the sister show of WWE RAW, taped the hour before the previous week's RAW, but there is always a live edition of Sunday Night Heat before a Pay Per View event, even if it's a SmackDown! Brand PPV, in which case, Michael Cole and Tazz commentate.

WWE, generally speaking, uses this program to showcase the talent that they do not use frequently on their main show WWE RAW. Fans often refer to this show as the minor leagues, a B-Show, for the wrestlers on the show are usually at the beginning or the end of their careers in WWE. Occasionally, main eventers and champions will appear on the show, and usually win.

Steven Richards, perhaps the most regular competitor on Sunday Night HEAT, has recently dubbed himself "General Manager of HEAT" and dubs the show Stevie Night HEAT although this title does not mean he carries out GM duties in actuality.