The 1975 Austrian Open was a combined men's and women's tennis tournament played on outdoor clay courts.

It was categorized as Grade B tournament and was part of the 1975 Commercial Union Assurance Grand Prix circuit.

It took place at the Tennis stadium Kitzbühel in Kitzbühel Austria and was held from 7 July through 13 July 1975.

Adriano Panatta and Sue Barker won the singles titles.

[3] Adriano Panatta defeated Jan Kodeš 2–6, 6–2, 7–5, 6–4 Sue Barker defeated Pam Teeguarden 6–4, 6–4 Paolo Bertolucci / Adriano Panatta defeated Patrice Dominguez / François Jauffret 6–2, 6–2, 7–6 Sue Barker / Pam Teeguarden defeated Fiorella Bonicelli / Raquel Giscafré 6–4, 6–3