Agnes Mary Frances Robinson, known after her second marriage as Agnes Mary Frances Duclaux (1857-1944) was an English writer and scholar on many subjects connected with France and French literature, and a poet. She was educated in Brussels and at University College, London. Her first marriage in 1888 was to James Darmesteter. She married Emile Duclaux of the Pasteur Institute in 1901.

She wrote nearly 30 books; her Collected Poems appeared in 1901. Arden: A Novel was published in 1888, La Vie de Emile Duclaux in 1907.