Joanna Jędrzejczyk is a Polish mixed martial artist and former professional UFC fighter. Born on August 18, 1987, in Olsztyn, Poland, she gained fame for her striking skills and became the UFC Women's Strawweight Champion in 2015. Jędrzejczyk is known for her disciplined training and competitive spirit, which have made her one of the top fighters in her division. In addition to her success in the UFC, Jędrzejczyk has a background in Muay Thai and has won multiple championships in that sport. She is recognized for her dedication to martial arts and has inspired many aspiring fighters around the world.