Klaudia Jans-Ignacik (née Jans; born 24 September 1984) is a Polish former professional tennis player.

Jans-Ignacik won three WTA Tour doubles tournaments, 2009 Andalucia Tennis Experience with Alicja Rosolska, 2012 Internationaux de Strasbourg with Olga Govortsova, and 2012 Rogers Cup with Kristina Mladenovic.

In 2012, she advanced to her first Grand Slam final at the French Open, with Santiago Gonzalez in the mixed-doubles tournament.

Jans-Ignacik is one of ten Polish tennis players in history who played in a Grand Slam final, others being Jadwiga Jędrzejowska, Wojciech Fibak, Mariusz Fyrstenberg, Łukasz Kubot, Marcin Matkowski, Agnieszka Radwańska, Alicja Rosolska,Iga Świątek and Jan Zieliński.

In January 2015, Jans-Ignacik advanced to her first women's doubles Grand Slam quarterfinal, with Andreja Klepač, at the Australian Open.