NXT TakeOver 36 was the 36th and final NXT TakeOver professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was held for wrestlers from the promotion's NXT brand division. The event took place on August 22, 2021, from the Capitol Wrestling Center, hosted at the WWE Performance Center in Orlando, Florida.

The event was held during that year's SummerSlam weekend, but was held the night after SummerSlam, which was held on Saturday while TakeOver 36 was held on Sunday. It was NXT's final major event in which the Performance Center's arena was called the Capitol Wrestling Center, as following NXT's restructuring as NXT 2.0 in September, the name was discontinued, with future events simply billed as being held at the Performance Center. The TakeOver series itself was discontinued in late 2021 after the rebranding to NXT 2.0. It would in turn be NXT's last major event in which the brand was considered WWE's third main brand, as with the restructuring to NXT 2.0, the brand reverted to being WWE's developmental territory.

Six matches were contested at the event, including one on the Kickoff pre-show. In the main event, Samoa Joe defeated Karrion Kross to win the NXT Championship for a record-breaking third time; this was Joe's final WWE match. In the penultimate match, Kyle O'Reilly defeated Adam Cole 2–1 in a two-out-of-three-falls match; this was also Cole's final WWE appearance. In other prominent matches, Ilja Dragunov defeated Walter by submission to win the NXT United Kingdom Championship ending Walter's record-setting reign at 870 days, and in the opening bout, Cameron Grimes defeated LA Knight to win the Million Dollar Championship with the added stipulation that if Grimes lost, Ted DiBiase would have become Knights' butler.