William Reaper Hall (3 May 1902 – 1 May 1963) was an Australian trade unionist and politician who served as a Labor Party member of the Legislative Council of Western Australia from 1938 until his death, representing North-East Province.
He attended state schools in Kalgoorlie and then began working as a miner.
He was elected to the Kalgoorlie Road Board in 1933 and would serve until 1949, including as chairman from 1935.
Hall entered parliament in 1938, defeating Catherine Reid Elliott, MBE, widow of the previous incumbent, Charles Elliott.
Hall married Dulcie Tangney in 1922; the couple had two daughters.