The lieutenant governor of Saskatchewan is the representative in Saskatchewan of the monarch, who operates distinctly within the province but is also shared equally with the ten other jurisdictions of Canada, as well as the other Commonwealth realms and any subdivisions thereof, and resides predominantly in his oldest realm, the United Kingdom. The lieutenant governor of Saskatchewan is appointed in the same manner as the other provincial viceroys in Canada and is similarly tasked with carrying out most of the monarch's constitutional and ceremonial duties. The current lieutenant governor is Russell Mirasty, who was appointed on July 17, 2019, following the death in office of Lieutenant Governor W. Thomas Molloy, on July 2, 2019.

Canadian federalism involves the current nature and historical development of the federal system in Canada.