William Arbuthnot or Arbuthnott may refer to: Sir William Arbuthnot, 1st Baronet (1766–1829), Lord Provost of Edinburgh William Arbuthnot (artillery officer) (died 1876), general in the Royal Artillery Sir William Arbuthnot, 3rd Baronet (1831–1889), major in the 18th Hussars William Arbuthnot (cavalry officer) (1838–1893), major-general in the 14th Hussars Sir William Arbuthnot Lane, 1st Baronet (1856–1943), surgeon Sir William Arbuthnot-Lane, 2nd Baronet (1897–1972), actor and producer Sir William Arbuthnot, 2nd Baronet (born 1950) William Reierson Arbuthnot (1826–1913), British businessman and legislator