Marcela Zacarías Valle (Latin American Spanish: [maɾˈsela sakaˈɾi.as]; born 26 March 1994) is an inactive Mexican tennis player.

Playing for her country in BJK Cup, she has a career win–loss record of 21–12 (as of June 2024).

Zacarías achieved greater success on the ITF Junior Circuit, having reached a career-high combined ranking of world No.

In the 2021 distributed film King Richard, Zacarías played 14-time Grand-Slam-champion Arantxa Sánchez Vicario.

Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss records.