Seymour Lowman (October 7, 1868 – March 13, 1940) was an American lawyer and politician from the city of New York. He was also Lieutenant Governor of New York from 1925 to 1926.
Seymor Lowman was born in Chemung, New York on October 7, 1868, the son of John Lowman (1832–1884) and Fanny (Bixby) Lowman. He was raised in Bainbridge, and completed his high school education at Bainbridge Union School. He then graduated from Lowell's Business College in Binghamton, and became a school teacher. He studied law with attorney John W. Church of Norwich, was admitted to the bar in 1891, and practiced in Elmira. On September 9, 1893, he married Katherine Harding Smith, whom he had known while growing up in Bainbridge.
Lowman became active in local politics as a supporter of the campaigns of Jacob Sloat Fassett. He was a member of the New York State Assembly (Chemung Co.) in 1909 and 1910, and also Chairman of the Chemung County Republican Committee from 1912 to 1934. He was a member of the New York State Senate (41st D.) from 1919 to 1924, sitting in the 142nd, 143rd, 144th, 145th, 146th and 147th New York State Legislatures, as well as a delegate to the 1924 and 1932 Republican National Conventions.