Sainte-Eulalie-de-Cernon (French pronunciation: [sɛ̃.t‿ølali də sɛʁnɔ̃]; Occitan: Senta Aulària de Sarnon) is a commune in the southern French department of Aveyron.

At the heart of the historic settlement is the Commandery of Saint Eulalia, a medieval hospital established by the Order of the Knights Templar.

After that Order was disbanded by Philip IV of France in 1307-1308, royal forces were sent to close the hospital down, and from that event a detailed account of the buildings, their contents, both in the chapel and in the secular parts of the complex, and the life and customs of the occupants, has survived.

[3] The Commandery came under the control of the Knights Hospitallers during the Hundred Years War and survived until its final destruction as a result of the French Revolution towards the end of the eighteenth century.

[3] Many medieval buildings survive, together with later ones, inside high defensive walls.