William Hammatt Davis (August 29, 1879 – August 13, 1964) was the Chairman of the War Labor Board (WLB) in the administration of President Franklin Roosevelt, where his job was keeping industrial peace between management and labor. He was also appointed US Economic Stabilizer in the last months of World War II, though Roosevelt's successor, Harry S. Truman, soon eliminated this potentially powerful position. Davis also helped draft the National Labor Relations Act (the Wagner Act) of 1935, which gave labor unions the right to organize.