Almonte is a former mill town in Lanark County, in the eastern portion of Ontario, Canada. Formerly a separate municipality, Almonte is a ward of the town of Mississippi Mills, which was created on January 1, 1998, by the merging of Almonte with Ramsay and Pakenham townships. Almonte is 46 kilometres south-west of downtown Ottawa. Its population as recorded in the 2016 Canadian Census was 5,039.