Trie-sur-Baïse is a commune in the Hautes-Pyrénées department in south-western France. It is the administrative center in a "canton" comprising 22 villages. It is famous for its annual pig festival known as "La Pourcailhade".
Trie-sur-Baïse is named after Jean de Trie, Lord of Toulouse.
Trie-sur-Baïse is a crossing point of five roads going to Castelnau-Magnoac (towards Toulouse), Lannemezan, Miélan, Mirande and Tarbes.
In August 1355, the early inhabitants of Trie assembled to decide where the church should be built. Snow began to fall and covered the ground except for one spot in the shape of a cross. This is where they built the first chapel dedicated to our "Lady of the snow", who is, to this day, the protector of the town. The anniversary on the first Sunday of August is still a date for important local worship and rejoicing.