Surname Āc (Uuk 
, Acton 
, Ackford 
) , across the world, is a common cognomen. The family name Āc is habitual in Suriname, where it is quite a common surname, Estonia, where it is quite a rare surname, and Ireland. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Canada. Much less frequently, Āc is the forename as well as the last name.