Charles Sydney Gibbes (19 January 1876 – 24 March 1963) was a British academic who from 1908 to 1917 served as the English tutor to the children of Emperor Nicholas II of Russia. When Nicholas abdicated the throne in March 1917 Gibbes voluntarily accompanied the Imperial family into exile to the Siberian city of Tobolsk. After the family was murdered in 1918 Gibbes returned to the United Kingdom and eventually became an Orthodox monk, adopting the name of "Nicholas" in commemoration of Nicholas II. He died in 1963, and is buried at Headington cemetery, Oxford, Oxfordshire, England.