The 1991 Open Clarins was a women's tennis tournament played on outdoor clay courts at the Racing Club de France in Paris, France and was part of the Tier IV category of the 1991 WTA Tour. It was the fifth edition of the tournament and was held from 16 September until 22 September 1991. First-seeded Conchita Martínez won her second consecutive singles title at the event and earned $27,000 first-prize money.

Conchita Martínez defeated Inés Gorrochategui 6–0, 6–3

Petra Langrová / Helena Suková defeated Alexia Dechaume / Julie Halard 6–4, 6–4

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