Simon Brown (November 29, 1802 – February 27, 1873) was an American politician who served as the 21st Lieutenant Governor for the Commonwealth of Massachusetts from 1855 to 1856. He was then an at-large delegate to the 1856 Republican Convention in Philadelphia where he supported the nomination of John C. Fremont.
Simon Brown, a politician from Massachusetts, held the position of Lieutenant Governor from 1855 to 1856 and was a delegate at large for the Republican Party at the 1856 convention where he supported John C. Fremont's presidential nomination.