The Regional Municipality of Wood Buffalo sometimes (RMWB)is a specialized municipality located in northeastern Alberta. Formed as a result of the amalgamation of the City of Fort McMurray and Improvement District No. 143 on April 1, 1995, it is the second largest municipality in Alberta by area. It is home to vast oil sand deposits, also known as the Athabasca Oil Sands, helping to make the region one of the fastest growing industrial areas in Canada.
Until the Alberta electoral boundary re-distribution of 2004, the municipality was divided between the provincial electoral districts of Fort McMurray (the community itself) and Athabasca-Wabasca (the surrounding area). The re-distribution amalgamated the municipality into a single electoral district covering the entire municipality. As a result, the new Wood Buffalo electoral district became the most populous such district in Alberta.