L'Île-Dorval (French pronunciation: [lil dɔʁval]) is a city in southwestern Quebec, Canada.

It lies a short distance offshore from the city of Dorval and is connected with a seasonal ferry service.

However, because not only permanent residents but also property owners are eligible to vote in municipal elections in Quebec, there were 50 registered voters in 2004.

[4] L'Île-Dorval forms part of the federal electoral district of Dorval—Lachine—LaSalle and has been represented by Anju Dhillon of the Liberal Party since 2015.

Provincially, L'Île-Dorval is part of the Marquette electoral district and is represented by Enrico Ciccone of the Quebec Liberal Party since 2018.