Last name Uutt (Utt 
, Uutt 
) , worldwide, is quite a rare family name. The surname Uutt is habitual in Marshall Islands, where it is a common surname, Estonia, where it is quite a rare surname, and Trinidad and Tobago. Measured by absolute frequency, this name is the most popular in the United States, Marshall Islands, and Nigeria. Very seldom, Uutt is the forename as well as the last name.