Ekaterina Alexandrovna Ovcharenko (, born 31 December 2000) is a Russian tennis player.
Ovcharenko has a career-high singles ranking by the WTA of 417, achieved on 11 August 2025. She also has a career-high WTA doubles ranking of 193, set on 3 November 2025.
Ovcharenko won her first major ITF title at the W75 Open Andrézieux-Bouthéon in the doubles draw, partnering Alevtina Ibragimova.
Ovcharenko WTA Tour main-draw debut at the 2025 Jiangxi Open, in the doubles tournament, partnering with Emily Webley-Smith. They defeated Chinese opponents Hou Yanan and Zhu Chenting in the first round to advance to the quarterfinals. They then defeated French Kristina Mladenovic and Polish Katarzyna Piter in the quarterfinals to advance to the semifinals.