La Trinité-des-Monts (French pronunciation: [la tʁinite de mɔ̃]) is a parish municipality in the Canadian province of Quebec, located in the Rimouski-Neigette Regional County Municipality.

The municipality's religious name refers to the trinity in Christianity.

In fact, the post office where La Trinité-des-Monts was later organised took the name Esprit-Saint in 1938.

These place names were chosen by the religious authorities of the Archdiocese of Rimouski.

More specifically, it was Monsignor Charles-Eugène Parent, Bishop of Rimouski, who baptised the parish when he spotted the Notre Dame Mountains to the east while looking for a site to build the church of La Trinité-des-Monts.