The Progressive Conservative Association of Alberta was a provincial centre-right party in the Canadian province of Alberta that existed from 1905 to 2020. The party formed the provincial government, without interruption, from 1971 until the party's defeat in the 2015 provincial election under premiers Peter Lougheed, Don Getty, Ralph Klein, Ed Stelmach, Alison Redford, Dave Hancock and Jim Prentice. At 44 years, this was the longest unbroken run in government at the provincial or federal level in Canadian history.

The 2015 Alberta general election was held on May 5, following a request of Premier Jim Prentice to the Lieutenant Governor of Alberta Donald Ethell to dissolve the Legislative Assembly on April 7. This election elected members to the 29th Alberta Legislature. It was only the fourth time in provincial history that saw a change of governing party, and was the last provincial election for both the Alberta Progressive Conservative and Wildrose parties, which merged in 2017 to form the United Conservative Party.