Nora Kristina Greenwald (born September 7, 1977) is an American retired professional wrestler. She is signed to WWE, under the ring name Molly Holly, as a producer. She is also known for her tenure in World Championship Wrestling (WCW) as Miss Madness and Mona from 1999 to 2000.

Holly began her professional wrestling career in WCW, where she also worked as a trainer. In 2000, Greenwald debuted in the then-WWF as part of The Holly Cousins stable, an alliance of storyline cousins. She was later aligned with The Hurricane. During her time with the WWF/WWE, Holly held the WWF Hardcore Championship once and the WWE Women's Championship twice.

Holly continues to make sporadic appearances in WWE, including competing at WWE Evolution and in the 2018 and 2020, and 2022 Women's Royal Rumble. Molly Holly was inducted into the WWE Hall of Fame in the 2021 class. She now serves as a backstage producer on WWE programming. She also holds short-term trainer roles in WWE LFG.