Saint-Augustin-de-Desmaures (French pronunciation: [sɛ̃t‿oɡystɛ̃ də demɔʁ]) is a city in central Quebec, Canada, on the Saint Lawrence River, adjacent to Quebec City.

The town was founded in 1691 by three families (Desroches, Racette, Couture).

It was merged with Quebec City on January 1, 2002 as part of the 2000–2006 municipal reorganization in Quebec and became part of the Laurentien borough of that city.

However, after a 2004 referendum it was re-established as a separate city on January 1, 2006.

[5] Population trend:[6] Mother tongue: In 2006, Saint-Augustin-de-Desmaures was 98.0% White, 0.5% Aboriginal, and 1.5% Visible Minorities.