The Marin, previously the Main Seneca Building, and originally known as the Marine Midland Trust Company Building or the "Marine Trust Building," is a 17-story Renaissance Revival style highrise in downtown Buffalo, New York. The building was previously the headquarters for Marine Midland Bank before the bank constructed One Marine Midland Center at 1 Seneca Tower, the tallest building in Buffalo. It is located in the Joseph Ellicott Historic District.

Green & Wicks was an architectural firm of Buffalo, New York.