Frederic Walker Lincoln IV (15 October 1898 – 7 April 1968) was chairman of the board of trustees of the New York Medical College and the Flower and Fifth Avenue Hospital who married into the Rockefeller family.

After graduating from Princeton, he joined his father's export-import firm H. W. Peabody & Co., of which he became a partner, until World War II began.

He enlisted as a sergeant in the aviation section of the Army Signal Corps and fought in World War II in the Naval Air Reserve, retiring with the rank of Commander.

[1] Lincoln was chairman of the board of trustees of the New York Medical College and the Flower and Fifth Avenue Hospital, retiring in 1965.

Together, Frederic and Isabel had four daughters:[1] Lincoln died at his home at 941 Park Avenue on April 7, 1968, in New York City.