Family name Деннисон (Dennison 
, Деннисон 
) , around the world, is a common last name. The surname Деннисон is habitual in Bermuda, where it is quite a common surname, New Zealand, where it is quite a rare surname, and the United Kingdom. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Canada. Very seldom, Деннисон is the forename as well as the last name.