Estefania Balda Álvarez (born 25 June 1987) is an Ecuadorian former professional tennis player.

Balda Álvarez has career-high WTA rankings of 519 in singles, achieved on 12 September 2005, and 459 in doubles, set on 12 September 2005.

In her career, she won one singles title and three doubles titles on the ITF Women's Circuit.

Playing for Ecuador Fed Cup team, Balda Álvarez has a win–loss record of 9–4.

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