Surname Монтегю (Montague 
, Montagu , Монтегю 
) , all around the world, is a common last name. The surname Монтегю is habitual in Guernsey, where it is quite a common surname, Jamaica, where it is quite a rare surname, and Ireland. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Australia. Very seldom, Монтегю is the forename as well as the last name.