Sir William Rollo or Rollock (died 24 October 1645) was a Scottish Royalist soldier of the Wars of the Three Kingdoms.
[1] While Rollo was serving in England as captain in General James King's lifeguards in 1644, Montrose's recruited him for service in Scotland.
Their report was negative, and so Montrose, with Rollo and Colonel William Sibbald, journeyed north to the Highlands disguised as a groom.
[1] An unconfirmed story of George Wishart had Rollo captured by Argyll on this mission, and released on condition that he would assassinate Montrose.
Rollo was in any case present at the Battle of Alford on 2 July 1645, sharing the command of the left wing with James Gordon, 2nd Viscount Aboyne.