The Knights of Columbus Building, in Downtown New Haven, Connecticut, is the headquarters of the Roman Catholic fraternal service organization, the Knights of Columbus. Also known as the Knights of Columbus Tower, the building was designed by Kevin Roche John Dinkeloo and Associates and finished in 1969. This 23 story modern style reinforced concrete building, at 321 feet (98 meters) tall, is the second-tallest building in the city's skyline. The cylindrical towers at the corners give the structure a simple geometric form.
The building was built at 1 Columbus Plaza next to the New Haven Coliseum (razed in 2007), designed by the same firm.