The 1988 Vitosha New Otani Open was a women's tennis tournament played on outdoor hard courts in Sofia, Bulgaria and was part of the Category 2 tier of the 1988 WTA Tour. The tournament ran from 8 August until 14 August 1988. Sixth-seeded Conchita Martínez won the singles title and earned $17,000 first-prize money.
Finals
Singles
Conchita Martínez defeated Barbara Paulus 6–1, 6–2
It was Martínez's 1st title of the year and the 1st of her career.
Doubles
Conchita Martínez / Barbara Paulus defeated Sabrina Goleš / Katerina Maleeva 1–6, 6–1, 6–4 It was Martínez's 2nd title of the year and the 2nd of her career. It was Paulus' 2nd title of the year and the 2nd of her career.