William Arbuthnot

William Arbuthnot or Arbuthnott may refer to:

• Sir William Arbuthnot, 1st Baronet (1766–1829), Lord Provost of Edinburgh
• Sir William Arbuthnot, 3rd Baronet (1831–1889), major in the 18th Hussars
• William Arbuthnot (British Army 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 (1950–2021)
• William Reierson Arbuthnot (1826–1913), British businessman and legislator
• William Urquhart Arbuthnot (1807–1874), British administrator in India