The 2021 Final Battle was the 20th Final Battle professional wrestling pay-per-view event produced by American promotion Ring of Honor (ROH). It took place on December 11, 2021 at the Chesapeake Employers Insurance Arena in Baltimore, Maryland. The event was billed as "The End of an Era", as it was the last Ring of Honor event to be held before the company went on hiatus, eventually resuming operations in April 2022.

Danielle Paultre, better known by the ring name Willow Nightingale, is an American professional wrestler. She is currently signed to All Elite Wrestling (AEW) and is the current AEW TBS Champion in her first reign. She also performs for AEW's partner New Japan Pro-Wrestling (NJPW), where she was the inaugural Strong Women's Champion.