Mason Brown (November 10, 1799 – January 27, 1867) was an American politician who served as secretary of state of Kentucky and Kentucky state treasurer. Mason Brown was born November 10, 1799, in Philadelphia, Pennsylvania, to John Brown and Margaretta (Mason) Brown. At the time of his birth, his father was a U.S. Senator from Kentucky. His mother was a sister of John M. Mason, D. D. Brown died on January 27, 1867, in Frankfort and was buried in Frankfort Cemetery, which he had helped establish in 1844. This article incorporates public domain material from the Yale Obituary Record.