Lyons-la-Forêt (French pronunciation: [ljɔ̃s la fɔʁɛ]) is a commune of the Eure department, Normandy, in northwest France.

Lyons-la-Forêt has distinctive historical geography, and architecture, and contemporary culture, as a consequence of the Forest of Lyons, and its bocage, and of the adjacent Pays de Bray.

Same root as the river Loire < Liger and -ley in Beverley (Yorkshire) from Celtic *bibro *licos > Old English beofor beaver, *licc stream.

In 1202, Philip II Augustus re-conquered the city, and after him, several French kings were attracted by the Lyons forest and the good hunting grounds.

From 1359 to 1398, the castellan domain of Lyons was part of Blanche de Navarre's dower after she became the widow of King Philip VI of France.