Simona Waltert, Swiss tennis player

Simona Waltert is a Swiss professional tennis player. She has a career-high WTA singles ranking of world No. 107, achieved on 12 June 2023 and a doubles ranking of No. 107, reached on 28 July 2025. To date, she has won one doubles title on the WTA Tour, and seven singles and four doubles titles at tournaments on the ITF Circuit.

December 13 is the 347th day of the year in the Gregorian calendar; 18 days remain until the end of the year.