Norris M. Winslow (May 19, 1835 – May 10, 1900) was an American banker, merchant and politician based primarily in Watertown, New York, who built almost 100 buildings in the city.

[1][2][3] Winslow attended public schools in Fields Settlement, New York as a boy.

He graduated in 1854, and became a clerk in a department store owned by Truman Keeler in Watertown, with a salary of $2 a week.

[2] In 1866, he opened the Merchants' Bank of Watertown, which was incorporated as a stock company in April 1870, and he became CEO.

[4] The Carthage, Watertown and Sackets Harbor Railroad began construction in 1872 with Winslow as a director.