Katja Thater (born 14 July , 1966 in Hamburg, Germany) is a professional poker player and horse breeder. She is the most well-known female poker player in her home country of Germany and is married to another poker professional, Jan von Halle.
Her popularity in Germany comes from the wide coverage on local television of her participation in the Poker Nations Cup and Woman's Poker Open.
Before becoming a professional poker player, Thater was the director of an event and marketing company in Hamburg and competed in dressage tournaments at horse shows. She continues competing in her spare time.
Thater represented Germany as a member of the national team in the 2006 Poker Nations Cup in Cardiff, participated in the Woman's Poker Open in London and recently was added as a member of Team PokerStars.
As of 2008, Thater's total live tournament winnings exceed $300,000.