Surname Донахью (Donahue 
, Donahoe 
, Донахью 
) , all around the world, is a common last name. The surname Донахью is characteristic of the United States, where it is quite a common surname, Canada, where it is quite a rare surname, and New Zealand. Measured by absolute frequency, it is the most numerous in the United States, Canada, and Australia. Very seldom, Донахью is the forename as well as the last name.