Last name Галагер (Galaher 
, Galager 
, Галагер 
) , across the world, is a rare surname. The last name Галагер is habitual in Bulgaria, where it is quite a rare surname, New Zealand, where it is a very rare surname, and the United States. Measured by absolute frequency, it is commonest in Bulgaria, the United States, and Australia. Much less frequently, Галагер is the forename as well as the last name.