The Canadian province of Alberta has a provincial highway network consisting of over of roads as of 2021-2022, of which have been paved.
All of Alberta's provincial highways are maintained by the Ministry of Transportation and Economic Corridors, a department of the Government of Alberta. The network includes two distinct series of numbered highways:
- The 1–216 series (formerly known as primary highways), making up Alberta's core highway network—typically paved and with the highest traffic volume
- The 500–986 series, providing more local and rural access, with a higher proportion of gravel surfaces
1–216 series
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Alberta's 1 to 216 series of provincial highways are Alberta's main highways. They are numbered from 1 to 100, with the exception of the ring roads around Calgary and Edmonton, which are numbered 201 and 216 respectively. The numbers applied to these highways are derived from compounding the assigned numbers of the core north–south and east–west highways that intersect with the rings roads. In Calgary, Highway 201 is derived from the north-south Highway 2 and the east-west Highway 1. In Edmonton, Highway 216 is derived from the same north-south Highway 2 and the east-west Highway 16.
Within this series, all or portions of Highways 1, 2, 3, 4, 9, 15, 16, 28, 28A, 35, 43, 49, 63, 201 and 216 are designated core routes of Canada's National Highway System (NHS).
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X series
The roads in the X series are typically highways that are planned realignments or spurs of existing highways. The numbers applied to each highway in the X series are derived from the highway that is planned for realignment or spurred from (e.g. Highway 16X will be a realignment of Highway 16, and Highway 10X is spur from Highway 10).