File:New York Life Building - Street View.jpg

English: The New York Life Building is the headquarters of the New York Life Insurance Company at 51 Madison Avenue in New York City. The tower is 40 stories tall, consisting of 34 office stories topped by a pyramidal, gilded six-story roof, and was constructed in 1927–1928. It overlooks Madison Square Park in the Rose Hill and NoMad neighborhoods of Manhattan.

The New York Life Building was designed by Cass Gilbert with Gothic Revival details similar to his previous commissions, which included 90 West Street and Woolworth Building. At the time of the building's construction, many structures were being built in the Art Deco style, and so Gilbert's design incorporated Art Deco influences in its massing while retaining the older-style Gothic Revival detailing. The New York Life Building is distinguished from the skyline by its gilded roof.

Upon completion, the New York Life Building was described as being run "like a small city". After World War II, New York Life became especially profitable, and built an annex to the north between 1960 and 1962. Additionally, New York Life completed a series of renovations to the original building during the late 20th century. The building was added to the National Register of Historic Places as a National Historic Landmark in 1978 and was designated a city landmark by the New York City Landmarks Preservation Commission in 2000.