Saint-Julien-d'Arpaon (French pronunciation: [sɛ̃ ʒyljɛ̃ daʁpaɔ̃]; Occitan: Sent Julian d'Arpaon) is a former commune in the Lozère department in southern France.

[2] On 1 January 2016, it was merged into the new commune of Cans-et-Cévennes.

[1] Saint-Julien-d'Arpaon stands at a crossing of the river Mimente on the Robert Louis Stevenson Trail (GR 70), a popular long-distance path following approximately the route travelled by Robert Louis Stevenson in 1878 and described in his book Travels with a Donkey in the Cévennes.

[4] Stevenson mentions the village and its ruined chateau in passing, though not by name: ...the road passed hard by two black hamlets, one with an old castle atop to please the heart of the tourist.

[5]This Lozère geographical article is a stub.