Sinja Kraus is an Austrian tennis player who reached a career-high singles ranking of world No. 80 in July 2026. She made her WTA Tour debut in 2021 and broke through in 2026 by qualifying for her first WTA 1000 event in Miami and her first Grand Slam at the French Open. Kraus has won two WTA 125 titles, including the 2025 Cali Open and the 2026 Kitzbühel Ladies Open, where she defeated fellow Austrian Julia Grabher in the final. Her rise into the top 100 came in February 2026, following a strong start to the season. Beyond the WTA Tour, she has claimed 13 ITF singles titles and represents Austria in the Billie Jean King Cup, having debuted in 2020. She also earned a bronze medal at the 2017 European Youth Olympic Festival.