The Official Opposition Shadow Cabinet of the 45th Parliament of Canada was appointed by the Leader of the Conservative Party Pierre Poilievre after the 2025 Canadian federal election, on 21 May 2025. It is composed of Conservative members of Parliament to provide parliamentary opposition to Mark Carney's Liberal government frontbench. Because Poilievre was unseated in the 2025 election, Andrew Scheer led the frontbench team as the parliamentary leader of the Conservatives and leader of the Opposition until Poilievre's return to Parliament through a by-election in Battle River—Crowfoot.