William Frederick Lamb FAIA (November 21, 1883 – September 8, 1952), was an American architect, chiefly known as one of the principal designers of the Empire State Building.

His father, William Lamb, was a widely known building contractor in Brooklyn and was originally from Glasgow, Scotland.

[1][2] Lamb joined the New York architecture firm Carrère & Hastings in 1911, shortly after returning from Paris, where he earned a diploma at the École des Beaux-Arts.

The firm also designed an addition to the Bankers Trust Company Building and worked with H. Craig Severance on 40 Wall Street in New York.

In addition to his studies at the École des Beaux Arts, Lamb received a bachelor's degree from Williams College in 1904 and did graduate work at the School of Architecture, Columbia University, from 1904 to 1906.