1989 Vitosha New Otani Open

The 1989 Vitosha New Otani Open was a women's tennis tournament played on outdoor clay courts in Sofia, Bulgaria that was part of the Category 1 tier of the 1989 WTA Tour. The tournament was held from 31 July until 6 August 1989. Second-seeded Isabel Cueto won the singles title.

Singles
Isabel Cueto defeated 🇧🇬 Katerina Maleeva 6–2, 7–6(7–3)
 * It was Cueto's 2nd title of the year and the 5th of her career.

Doubles
🇮🇹 Laura Garrone / 🇮🇹 Laura Golarsa defeated Silke Meier / 🇧🇬 Elena Pampoulova 6–4, 7–5
 * It was Garrone's only title of the year and the 1st of her career. It was Golarsa's only title of the year and the 1st of her career.