Highway 6 is a north-south highway in southern Alberta, Canada. It spans approximately 74 kilometres (46 mi) from Alberta's border with Montana to Highway 3 (Crowsnest Highway).

Highway 6 is part of the Cowboy Trail between Highway 5 in Waterton Lakes National Park and the Crowsnest Highway, where the Cowboy Trail follows Highway 3 to Highway 22 and continues north.

Montana Highway 17 in Glacier National Park becomes Alberta Highway 6 in Waterton Lakes National Park as it crosses the Canada–United States border at Chief Mountain. Generally travelling in a north direction from Chief Mountain, the highway provides access to the Hamlet of Waterton Park via Highway 5, and passes through the Hamlet of Twin Butte and the Town of Pincher Creek. Highway 6 ends at Highway 3 north of Pincher Creek.

The following is a list of major intersections along Alberta Highway 6 from south to north.

Rural/specialized municipality	Location	km	mi	Destinations	Notes
I.D. No. 4 (Waterton Lakes National Park)	Chief Mountain	0.0	0.0	MT 17 south – Glacier National Park	Continues into Montana
				Canada–United States border at Chief Mountain Border Crossing
	​	22.0	13.7	Highway 5 east – Cardston, Lethbridge	South end of Hwy 5 concurrency and Cowboy Trail
		22.9	14.2	Highway 5 west – Waterton Park	North end of Hwy 5 concurrency
M.D. of Pincher Creek No. 9	​	49.2	30.6	Highway 505 east – Glenwood
	Pincher Creek	69.3	43.1	Highway 501 east / Highway 785 north (Macleod Street)	South end of Hwy 501 concurrency
		70.6	43.9	Highway 501 west / Hewetson Avenue – Beaver Mines, Castle Mountain	Roundabout; north end of Hwy 501 concurrency
	Pincher Station	73.5	45.7	Highway 3 (Crowsnest Highway) – Crowsnest Pass, Fort Macleod, Lethbridge	Interchange proposed; Cowboy Trail follows Highway 3 west to Highway 22
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Route transition

• The Cowboy Trail's official webpage