Michael Patrick O'Connor (September 29, 1831 – April 26, 1881) was an American lawyer, politician and Confederate Civil War veteran who served one term as a U.S. Representative from South Carolina from 1879 to 1881.

Born in Beaufort, South Carolina, O'Connor attended the public schools and was graduated from St. John's College, Fordham, New York, in 1850.

[1] During the Civil War, he served in the Confederate military as a lieutenant in the Lafayette Light Artillery.

He received credentials as a Member-elect to the Forty-seventh Congress, but his ability to take his seat was delayed, pending a contest of the election by Edmund W.M.

The inquiry subsequently resulted successfully for the contestant, although O’Connor had died in Charleston, South Carolina, April 26, 1881, before the resolution was announced.