Andrew Ryan McGill (February 19, 1840 – October 31, 1905) was an American politician of the United States Republican Party.

In 1795 Patrick and Anna moved their family to the western part of Pennsylvania, homesteading several hundred acres in Crawford County.

In 1859, at the age of nineteen, Andrew Ryan McGill moved from Pennsylvania to Kentucky to become a schoolteacher.

When the Civil War began and teaching, work was no longer feasible in Kentucky, McGill left for Minnesota, arriving June 10, 1861.

In 1873, McGill was appointed insurance commissioner of the state, a position he held for thirteen years.

During his term he recommended a revision of the railroad laws pertaining to transportation, storage, and grading of wheat, the watering of railroad stocks, a simplification of the tax laws, regulation of liquor, abolition of contract prison labor, establishment of a soldiers' home, and creation of a Bureau of Labor Statistics.

While not re-elected, McGill remained active in politics, supporting the presidential candidacy of Cushman K. Davis (1896) and serving in the Minnesota State Senate from the 37th District, St. Paul (1899–1905).