Lac La Biche-McMurray was a provincial electoral district in Alberta, Canada, mandated to return a single member to the Legislative Assembly of Alberta using first-past-the-post balloting from 1971 to 1986.
It replaced the district of Lac La Biche with minimal boundary changes in 1971, and when abolished in 1986, was replaced by Athabasca-Lac La Biche and Fort McMurray. It differed from the current Fort McMurray-Lac La Biche riding in that it included the entire city of Fort McMurray.
The riding's first MLA was Dan Bouvier, newly-minted member for Lac La Biche. Elected under the Social Credit banner, he resigned from caucus a year later "in the interest of [his] constituents". He did not run again in the 1975 election.
The riding was then picked up by the governing Progressive Conservatives, with Ron Tesolin winning by a large margin over four rivals. He served only one term as MLA, but Norm Weiss held the riding for the PCs for two more terms.
Lac La Biche-McMurray was then abolished for the 1986 election and replaced with Fort McMurray, where Weiss would go on to serve two more terms, and Athabasca-Lac La Biche, which would be picked up by the New Democrats.
In the late 70's, the population of Lac La Biche-McMurray inflated alongside the economic boom in the Athabasca oil sands, seen in the near-doubling of eligible electors for the 1979 election.