Kati Tolmoff is a badminton player from Estonia. She represented Estonia at the 2008 and 2016 Olympic Games. She competed in the women's singles event, where she lost to Chloe Magee 21–18, 18–21, and 19–21 in the first round. In 2016, she was the runner-up in the group K stage, lose a match to Ratchanok Intanon, and won a match to Yip Pui Yin. In September 2009, Tolmoff announced that because of a lack of money, her professional career was over. But she returned in 2014. Tolmoff also competed at the 2015 Baku European Games.