J. Pickering Putnam (April 3, 1847 – February 23, 1917) also known as J.P. Putnam or John Pickering Putnam, was an American architect and designer who "pioneered the concept of the modern apartment building." He designed several buildings in the Back Bay area of Boston, Massachusetts. He earned a number of design patents related to plumbing, ventilation, and the like, such as US Patent No.563,064 (1896), a design for a washbasin.