Isabel Cueto (born 3 December 1968) is a retired professional tennis player from Germany.

Isabel Cueto was born in Kehl to her father, Toni, an electrical engineer who had immigrated from Bolivia, and her mother, Jutta, a German.

[1] In 1984, Cueto became the youngest German national champion, winning the final against Elke Renz.

[2] Cueto won a total of six titles on the main WTA Tour over the course of her career; five in singles, one in doubles.

She represented the Germany Fed Cup team four times from 1988 to 1990, playing all four matches in doubles ties.