Lyalta is a hamlet in southern Alberta, Canada within Wheatland County. It is located 8 kilometres (5.0 mi) north of Highway 1, approximately 32 kilometres (20 mi) east of Calgary.

In the 2021 Census of Population conducted by Statistics Canada, Lyalta had a population of 480 living in 174 of its 178 total private dwellings, a change of 39.5% from its 2016 population of 344. With a land area of 1.74 km² (0.67 sq mi), it had a population density of 275.9/km² (714.5/sq mi) in 2021.

As a designated place in the 2016 Census of Population conducted by Statistics Canada, Lyalta had a population of 28 living in 8 of its 9 total private dwellings, a change of 7.7% from its 2011 population of 26. With a land area of 0.15 km² (0.058 sq mi), it had a population density of 186.7/km² (483.5/sq mi) in 2016.