Ely Jacques Kahn (June 1, 1884 – September 5, 1972) was an American commercial architect who designed numerous skyscrapers in New York City in the twentieth century.

[1] In addition to buildings intended for commercial use, Kahn's designs ranged throughout the possibilities of architectural programs, including facilities for the film industry.

In this period his work alternated Beaux-Arts with cubism, modernism, and art deco, of which examples are 2 Park Avenue (1927), using architectural terracotta in jazzy facets and primary colors, the Film Center Building in Hell's Kitchen (1928–29) and the Squibb Building (1930), which Kahn considered among his best work.

In 1944, Kahn and Jacobs rendered a prosaic program, the Municipal Asphalt Plant, at FDR Drive between 90th and 91st Street, as a free-standing concrete structure with four parabolic steel arches.

[16] For the New York Stock Exchange Building annex into 20 Broad Street, Kahn & Jacobs created additional facilities in 1956 designed with their characteristic zig-zag of setbacks in the upper stories.