Sir William Macnamara Goodenough, 1st Baronet DL (1899–1951) was a British banker. He served as the Chairman of Barclays Bank from 1947 to 1951.
William Macnamara Goodenough was born in 1899. He was the son of Frederick Goodenough, who had been chairman of Barclays Bank from 1917 to 1934. He was educated at Wellington College and the University of Oxford.
Goodenough served as the Chairman of Barclays Bank from 1947 to 1951.
Goodenough died in 1951. He was succeeded to the title by his son, Sir Richard Edmund Goodenough, 2nd Baronet (1925–1996).