Last name Gestr (Guest 
, Gest , Gæst 
) , globally, is a common family name. The cognomen Gestr is habitual in Martinique, where it is quite a common surname, Isle of Man, and the United Kingdom. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia. Very seldom, Gestr is the forename as well as the last name.