Dorval—Lachine—LaSalle is a federal electoral district on Montreal Island in Quebec. It encompasses a portion of Quebec formerly included in the electoral districts of LaSalle—Émard and Notre-Dame-de-Grâce—Lachine.
Dorval—Lachine—LaSalle was created by the 2012 federal electoral boundaries redistribution and was legally defined in the 2013 representation order. It came into effect upon the call of the Canadian federal election, 2015, scheduled for 19 October 2015.
The riding was originally intended to be named Dorval—Lachine.