Jennifer "Jennicide" Leigh (born August 10, 1983 in Wilmington, Delaware) is an American professional poker player.

Leigh was introduced to poker by Robert Boyd (Dutch Boyd's brother) years after they met each other on Internet Relay Chat.

Leigh built up from playing $5 SNG online poker tournaments to playing $100/$200 limit hold'em cash games. She also cashed in the $1,000 limit hold'em event of the World Championship of Online Poker.

Leigh's nickname "Jennicide" was her alias on hacking bulletin boards when she was younger. She was at one time involved in beige boxing. (Leigh has described herself as a nerd, with knowledge of Linux and C# programming.)

Whilst Leigh is best known for playing online poker at PokerStars under the screen name "Jennicide," she was also involved in the Poker Royale: Battle of the Ages series. She won two preliminary heats and went on to finish 5th in the Grand Final. She finished in the money in the World Poker Tour (WPT) 2006 Caribbean Poker Adventure.

Leigh has been romantically involved with several young poker professionals. She has indicated that she finds it difficult to maintain a relationship whilst playing poker.

Jennicide loves video games, and recently blogged about reaching level 70 on World of Warcraft. She also played the MMORPG EverQuest.

Leigh has also posed for FHM Online in 2007, and will appear in the May 2008 issue of Playboy.

As of 2008, her live tournament winnings exceed $61,000.