Maxime Decelles (30 April 1849 – 7 July 1905) was a Canadian Roman Catholic bishop.

He was educated at Saint-Hyacinthe Seminary and ordained at Iberville July 21, 1872 by Bishop Charles La Rocque.

In 1875, Bishop Louis-Zéphirin Moreau made Decelles titular canon of the Cathédrale Saint-Hyacinthe-le-Confesseur.

[2] Decelles was appointed coadjutor to Moreau and consecrated titular bishop of Druzipara on 9 March 1893.

He continued as pastor at St. Peter's, and in 1898, on the Feast of St. Anne (July 26), led a pilgrimage by steamer from Sorel to the shrine of Sainte-Anne-de-Beaupré.