Illiers-Combray (French pronunciation: [ilje kɔ̃bʁɛ]) is a commune in the Eure-et-Loir department in north central France.

Combray was the writer Marcel Proust's name for the village of Illiers (near the Cathedral town of Chartres), vividly depicted by him in the opening chapters of his vast semi-autobiographical novel In Search of Lost Time.

The home of Proust's "Aunt Léonie" in the heart of the village, where he spent much of his childhood, has been transformed into a museum to the writer's memory.

It should be added that Proust scholars have recently claimed his descriptions of "Combray" owe as much to the author's stays in his uncle's home in Auteuil, near Paris, as to Illiers-Combray.

As a tribute to Proust's literary masterpiece, the people of Illiers decided, in 1971, to change the town's name to Illiers-Combray, on the occasion of the centenary of the author's birth.