Lumsden is a town in the Canadian province of Saskatchewan. The population of Lumsden was 1,523 in 2006. The mayor of Lumsden is Bryan Matheson. The town was originally known as "Happy Hollow" in 1881 and was changed to "Lumsden" in 1889 after Hugh Lumsden, a senior engineer with the Qu'Appelle, Long Lake and Saskatchewan Railway.