Last name ارنوت (Arnot 
, Arnaut 
, ارنوت) , all around the world, is a common cognomen. The family name ارنوت is habitual in Bosnia and Herzegovina, where it is a common surname, Moldova, where it is quite a common surname, and Serbia, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Bosnia and Herzegovina, Moldova, and the United States. Very seldom, ارنوت is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arnot | Portugal, United States, United Kingdom, Brazil, Mexico |
| Arnaut | Serbia, Moldova, United States, Brazil, Bosnia and Herzegovina |