Mark's Work Wearhouse

Mark's Work Wearhouse, sometimes branded as Mark's, is a Canadian clothing retailer. First opened in Calgary, Alberta in 1977 by Mark Blumes, a former retail executive with the Hudson's Bay Company, it has been owned since 2001 by Canadian Tire. It was originally called Mark's Men's Work Wearhouse, but rebranded as "Work Wearhouse" and, later, Mark's Work Wearhouse when it started carrying women's clothing in the 1980s.

In Quebec, stores had carried the name "La Ouerâsse," a meaningless French-sounding version of the word "wearhouse," but they were rebranded as L'Équipeur ("Outfitter") in 1990. As of 2007, 39 stores operate under the banner L'Équipeur. They were the official retailer of the Montreal Alouettes football team from 2005-2010.