Hamilton West—Ancaster—Dundas (French: Hamilton-Ouest—Ancaster—Dundas) is a federal electoral district in Ontario.

Hamilton West—Ancaster—Dundas 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 42nd Canadian federal election, on October 19, 2015.

[4] Following the 2022 Canadian federal electoral redistribution, the riding will gain the Carpenter neighbourhood from Flamborough—Glanbrook, and will lose its territory in Strathcona (comprising the uninhabited section of Woodlands Cemetery) to Hamilton Centre.

According to the 2021 Canadian census[5] Languages: 71.1% English, 2.7% Arabic, 2.4% Mandarin, 2.3% Italian, 1.5% Spanish, 1.0% Portuguese, 1.0% Polish Religions: 54.6% Christian (27.2% Catholic, 4.4% United Church, 4.1% Anglican, 2.5% Christian Orthodox, 2.1% Presbyterian, 1.6% Baptist, 1.0% Pentecostal, 11.7% Other), 7.3% Muslim, 1.9% Hindu, 1.5% Jewish, 1.0% Sikh, 32.4% None Median income: $44,000 (2020) Average income: $69,000 (2020) This riding has elected the following members of Parliament: