1991 Austrian Tennis Grand Prix
Date	11–17 February
Edition	5th
Category	Tier V
Draw	32S / 16D
Prize money	100,000
Surface	Carpet / indoor
Location	Linz, Austria
Venue	Intersport Arena
Champions
Singles
Manuela Maleeva-Fragnière
Doubles
Manuela Maleeva-Fragnière Raffaella Reggi
← 1990 · Linz Open · 1992 →

The 1991 Austrian Tennis Grand Prix was a women's tennis tournament played on indoor carpet courts at the Intersport Arena in Linz, Austria that was part of Tier V of the 1991 WTA Tour. It was the fifth edition of the tournament and was held from 11 February through 17 February 1991. First-seeded Manuela Maleeva-Fragnière won the singles title and earned $18,000 first-prize money as well as 110 ranking points.^[1]

Finals

Singles

Manuela Maleeva-Fragnière defeated Petra Langrová 7–5, 6–3

• It was Maleeva-Fragnière's 1st singles title of the year and the 13th of her career.

Doubles

Manuela Maleeva-Fragnière / Raffaella Reggi defeated Petra Langrová / Radka Zrubáková 6–4, 1–6, 6–3

• It was Maleeva-Fragnière's 1st doubles title of the year and the 3rd of her career. It was Reggi's 1st doubles title of the year and the 3rd of her career.