Gilles Dyan (born 1960) is a French art dealer and founder and chairman of Opera Gallery, a modern and contemporary art gallery with sixteen exhibition spaces worldwide.

[1][2][3] Dyan was born on 1 October 1960 in Tunis, Tunisia, to a couple who were both schoolteachers.

[3][5] Dyan originally studied and worked in marketing, and earned a living selling art prints, before opening the first Opera Gallery, in Singapore in 1994,[2][3] followed shortly afterwards by another in Rue Saint-Honoré, in Paris, France.

[2] He became a member of the European Chamber of Expert-Advisors in Fine Art in 2000.

[3][6] In 2021 he set up a 100 million euro investment fund, regulated in Luxembourg, to support the acquisition of works for resale and to provide guarantees at auction.