Mercedes Paz was the defending champion, but lost in the first round to Radka Zrubáková.
Zrubáková won the title by defeating Rachel McQuillan 7–6(7–3), 7–6(7–3) in the final.[1][2][3]
The first four seeds received a bye into the second round.
1991 - Radka Zrubakova - CZE
Strasbourg Open: Radka Zrubakova of Czechoslovakia beat Rachel McQuillan of Australia 7-6 (7-3), 7-6 (7-3) in the final in Strasbourg, France.