1989 Vitosha New Otani Open – Singles

Conchita Martínez was the defending champion but did not compete that year. Isabel Cueto won in the final 6–2, 7–6 against Katerina Maleeva.

1989 Vitosha New Otani Open – Singles

Conchita Martínez was the defending champion but did not compete that year. Isabel Cueto won in the final 6–2, 7–6 against Katerina Maleeva.