Highway 9 is a highway in south-central Alberta, Canada, which together with Saskatchewan Highway 7 connects Calgary to Saskatoon, Saskatchewan via Drumheller. It is designated as a core route of the National Highway System, forming a portion of an interprovincial corridor. Highway 9 spans approximately 324 km (201 mi) from the Trans-Canada Highway (Highway 1) east of Calgary to Alberta's border with Saskatchewan.

Highway 9 begins at its interchange with Highway 1 approximately 10 km (6 mi) east of Chestermere and 20 km (12 mi) west of Strathmore, and approximately 6 km (4 mi) north of Langdon via Highway 797. For its first 45 km (28 mi), Highway 9 generally runs in a north/south direction to Beiseker, where it meets Highways 72 and 806. At Beiseker, Highway 9 runs in an east-west direction for 64 km (40 mi) to Drumheller, where it meets Highways 10 and 56. Highways 9 and 56 then run in a north/south concurrence for 22 km (14 mi) from Drumheller to its intersection with Highway 27 east of Morrin. Highway 9 leaves the concurrence at this point and runs east/west for the balance of route to the Saskatchewan border, providing connections to Hanna and Oyen as well as numerous smaller communities, and generally running parallel to Highway 12 to the north. The highway continues as Saskatchewan Highway 7 in a northeast direction toward Saskatoon.

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Over the past few years, the province of Alberta has executed a number of upgrades to the highway, widening shoulders and realigning the road (most recently just west of Drumheller, although the new alignment now bypasses the Horseshoe Canyon landmark as a result). As of 2007, however, the province has yet to twin any stretch of the busy highway, and there have been calls for interchanges to be built at its junctions with Highway 21 and the Trans-Canada due to the number of fatal automobile accidents that have happened at these locations.

A partial cloverleaf interchange was constructed in 2007 where Highway 9 crosses the Trans-Canada Highway. As well, the junction with Highway 21 was changed to a four-way stop in early 2011.

The following is a list of major intersections along Alberta Highway 9 from west to east.

Rural/specialized municipality	Location	km	mi	Destinations	Notes
Foothills County	​	−22.6	−14.0	Highway 552 – De Winton	Hwy 797 southern terminus; unsigned
		−19.7	−12.2	dead end	Hwy 797 northern terminus
Gap in Hwy 797 / Range Road 273 (Bow River)
Rocky View County	​	−16.2	−10.1	Township Road 220
		−8.1	−5.0	Highway 22X – Calgary, Gleichen
	Langdon	−6.5	−4.0	Highway 560 west (Glenmore Trail) / Township Road 234 – Calgary	Hwy 797 southern terminus
	​	0.0	0.0	Highway 1 (TCH) – Strathmore, Medicine Hat, Calgary	Interchange
				Highway 9 western terminus • Highway 797 northern terminus
		13.0	8.1	Highway 564 – Delacour, Calgary
		19.4	12.1	Highway 566 west – Balzac, Kathyrn, Keoma
		32.7	20.3	Highway 567 west – Airdrie
	Irricana	35.1	21.8	UAR 144 west
	Beiseker	43.2	26.8	UAR 141 west
		44.3	27.5	Highway 72 west – Crossfield Highway 806 north – Acme, Linden	Hwy 9 branches east; former Hwy 21A / Hwy 26 north
Wheatland County / Kneehill County	​	63.8	39.6	Highway 21 – Three Hills, Strathmore
		70.3	43.7	Highway 836 north – Carbon	Former Hwy 26 north
		82.7	51.4	Highway 840 south – Rosebud, Standard
Kneehill County	​	98.6	61.3	Highway 841 south – Dalum
Town of Drumheller		106.8	66.4	Highway 10 east / Highway 56 south (Railway Avenue S) – Rosedale 5 Street SE	Hwy 9 branches northwest; west end of Hwy 56 concurrency
		107.7	66.9	2 Street SW Highway 575 west (South Dinosaur Trail) – Nacmine	Hwy 9 / Hwy 56 branches north
		108.3	67.3	Crosses the Red Deer River
		108.8	67.6	Highway 838 west (North Dinosaur Trail) – Royal Tyrrell Museum
		109.1	67.8	Highway 576 east
Starland County	Munson	119.4	74.2	Township Road 302
	​	129.0	80.2	Highway 27 west – Morrin, Three Hills Highway 56 north – Stettler	Hwy 9 branches east; east end of Hwy 56 concurrency
		142.0	88.2	Highway 849 south – Michichi
		151.8	94.3	Highway 851 – Byemoor, Delia
		161.5	100.4	UAR 122 north – Craigmyle
Special Area No. 2	​	172.9	107.4	Highway 855 north – Watts, Endiang
		174.6	108.5	Highway 862 south – Gem
	Hanna	183.1	113.8	Palliser Trail (Range Road 144)
	​	189.8	117.9	Highway 36 north – Castor, Viking	West end of Hwy 36 concurrency
		192.4	119.6	Highway 36 south – Brooks, Taber	East end of Hwy 36 concurrency
Special Area No. 3	Youngstown	237.0	147.3	Highway 884 south – Big Stone	West end of Hwy 884 concurrency
	​	244.0	151.6	Highway 884 north – Veteran	West end of Hwy 884 concurrency
	Cereal	267.5	166.2	Highway 886 – Sedalia, Consort, Buffalo
	Oyen	291.1	180.9	Highway 41 – Consort, Oyen, Medicine Hat
	​	309.2	192.1	Highway 899 north – Esther	West end Hwy 899 concurrency
		310.9	193.2	Highway 899 south	East end of Hwy 899 concurrency
		324.1	201.4	Highway 7 east – Alsask, Kindersley, Saskatoon	Continues east into Saskatchewan
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former       Concurrency terminus       Route transition

Highway 797
Location	Foothills County, Rocky View County
Length	9.4 km (5.8 mi)

Highway 797 is a highway in the Calgary Region that functions as a southern extension of Highway 9. It presently is in two segments; the 6.5 km (4.0 mi) northern segment runs from Highway 560 (Glenmore Trail) in Langdon to the Trans-Canada Highway, while the 2.9 km (1.8 mi) southern section is unsigned and runs from Highway 552 to the south bank of the Bow River. The northern segment used to extend from Langdon to the north bank of the Bow River, indicating that a bridge might be constructed to connect the two sections. The bridge was not constructed and the 9.7 km (6.0 mi) section was transferred to Rocky View County in the 2000s.