Last name Kristgeirsson (Kristgeirsson 
) , all around the world, is a very rare cognomen. The cognomen Kristgeirsson is habitual in Iceland, where it is quite a common surname, Denmark, where it is a rare surname, and Portugal, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kristgeirsson | Portugal, Denmark, Iceland, Finland |
| einar kristgeirsson Icelandic alpine skier, IS (b. 1994) |
|