Tiffany Lynn van Soest is an American Muay Thai kickboxer who competes in the bantamweight division. Originally a Shōrin-ryū karate practitioner, van Soest began Muay Thai at the age of eighteen and was both a state and national titlist as an amateur before turning professional in 2011 and winning the WBC Muaythai International Super Bantamweight Championship the following year. Tiffany has also held the Lion Fight Promotions Featherweight and Glory Women's Super Bantamweight titles.