The MR-63 was the first generation of rubber-tyred rolling stock of the Montreal Metro in the city of Montreal, Quebec, Canada. Based on the MP 59 of the Paris Métro in France, the trains were in use on three of Montreal's four Metro lines from 1966 until 2018. By the time of their withdrawal, the trains were among the oldest still in use on any metro system in North America, at 52 years old.