Sinja Kraus (born 29 April 2002) is an Austrian tennis player.Kraus has a career-high WTA singles ranking of 208 and a doubles ranking of world No. 378, achieved on 25 July 2022.She reached a career-high ITF juniors ranking of No. 87 on 21 January 2019. Kraus won a bronze medal at the 2017 European Youth Summer Olympic Festival in Győr. She represents Austria in the Fed Cup and made her debut in 2020, when she partnered Melanie Klaffner in the tie against Italy, losing to Giulia Gatto-Monticone and Martina Trevisan.