William Fremantle may refer to:
*
William Fremantle (politician) (1766–1850), British courtier and politician
*
William Fremantle (Dean of Ripon, died 1895) (1807–1895), Anglican priest and Dean of Ripon
*
William Fremantle (Dean of Ripon, died 1916) (1831–1916), Anglican priest and Dean of Ripon
See also
*
William Thomas Freemantle (1849–1931), British author and organist
{{hndis, Fremantle, William