William Fellowes may refer to:
William Fellowes (barrister) (1660–1724), Master in Chancery William Fellowes (MP, died 1804) (c. 1726–1804), British member of parliament, MP for Ludlow, and for Andover William Henry Fellowes (1769–1837), his son, British member of parliament, MP for Huntingdon, and for Huntingdonshire William Fellowes, 2nd Baron de Ramsey (1848–1925), British member of parliament, MP for Huntingdonshire, and for Ramsey Billy Fellowes (1910–1987), English footballer