Bourg-Saint-Pierre (French pronunciation: [buʁ sɛ̃ pjɛʁ]; Arpitan: Lo Bôrg) is a municipality in the district of Entremont in the canton of Valais in Switzerland . Bourg-Saint-Pierre is the highest inhabited locality of the valley and the last village when ascending the Great Saint Bernard Pass.

Bourg-Saint-Pierre is first mentioned in 1125 as Burgus Sancti Petri. In medieval times, it was a stage on the Via Francigena. A 1693 map of the Valais refers to Bourg-Saint-Pierre as "S Pierre". A 1799 map of the Helvetic Republic shows the town as "Saint Petersburg".