Gerardus Franciscus Amadeus de Bie, O.Cist (16 March 1844 - 25 June 1920) was a Dutch Catholic prelate who served as abbot of Bornem Abbey.

In 1862 he entered Bornem Abbey, and chose his monastic name in honour of Amadeus of Lausanne.

De Bie's new appointment required that he move to Rome, where he lived in a rented apartment.

De Bie served as abbot general throughout the First World War.

This article about a Belgian Roman Catholic cleric is a stub.