Saint-Romain-Lachalm (French pronunciation: [sɛ̃ ʁɔmɛ̃ laʃalm]; Sant Roman in Occitan) is commune in the Haute-Loire department in south-central France.

Notable sights include the church, the chateau (privately owned), and the roadside cross.

The noble Du Peloux de Saint Romain family are the counts of Saint-Romain-Lachalm.

When the French Revolution came, Count Charles du Peloux and his son were condemned to death for the simple fact of being of noble lineage.

They were finally pardoned thanks to numerous witnesses attesting that they were sympathetic to republican principles (they were supporters of Lafayette).