Stormont, Dundas and Glengarry Highlanders is a Primary Reserve infantry regiment of the Canadian Army. It is part of 33 Canadian Brigade Group, 4th Canadian Division and is headquartered in Cornwall, Ontario.

The 154th Battalion, CEF was a unit in the Canadian Expeditionary Force during the First World War. Based in Cornwall, Ontario, the unit began recruiting in late 1915 from the 59th Stormont and Glengarry Regiment and in Stormont, Dundas, and Glengarry Counties. The battalion is perpetuated by the Stormont, Dundas and Glengarry Highlanders.