Abbé Pierre Antoine Simon Maillard (c. 1710 – 12 August 1762) was a French-born priest. He is noted for his contributions to the creation of a writing system for the Mi'kmaq people of Île Royale, New France (now Cape Breton Island, Canada). He is also credited with helping negotiate a peace treaty between the British and the Mi'kmaq that resulted in the Burying the Hatchet ceremony (Nova Scotia). He was the first Catholic priest in Halifax, Nova Scotia, and is buried in the St. Peter's Cemetery, in Downtown Halifax.