Parvati Shallow ( PARV-ə-tee; born September 21, 1982) is an American television personality, best known for competing on multiple seasons of the reality game show Survivor. She was the winner of Survivor: Micronesia — Fans vs. Favorites, competing as a Favorite, having previously competed in Survivor: Cook Islands in which she placed sixth, and later was the runner-up in Survivor: Heroes vs. Villains. In 2020, she competed on the show's 40th season, Survivor: Winners at War, in which she placed 15th. She is set to compete in her 5th season of Survivor, where she will represent the USA on the upcoming Australia V The World season of Australian Survivor, set to air in 2025.

Shallow gained the nickname "Black Widow" due to her strategic gameplay on Survivor, particularly her usage of flirtation to subtly control the game. The nickname followed her other reality show appearances, including The Traitors 2 and Deal or No Deal Island. Beyond embracing it for television, Shallow has used the moniker in her role as a life coach—notably in her course How Villains are Made, which focuses on personal empowerment topics. She is also the author of Nice Girls Don't Win, which is both a book and a podcast.