Katarzyna "Kasia" Niewiadoma Phinney is a Polish racing cyclist who rides for UCI Women's WorldTeam Canyon–SRAM zondacrypto. Among her eighteen professional wins are the Tour de France Femmes in 2024, La Flèche Wallonne in 2024, the Amstel Gold Race in 2019, the Trofeo Alfredo Binda-Comune di Cittiglio in 2018, and the Women's Tour in 2017.
