Martyna Trajdos (born 5 April 1989) is a German judoka competing in the women's 63 kg division. She won gold at the 2015 European Judo Championships in Baku. She competed at the 2016 Summer Olympics in Rio de Janeiro in the women's 63 kg division. She was defeated by Mariana Silva of Brazil in the second round. In 2020, she won one of the bronze medals in the women's 63 kg event at the 2020 European Judo Championships held in Prague, Czech Republic. She also competed in the women's 63 kg event at the 2020 Summer Olympics held in Tokyo, Japan.