Across the world, Andreassen (Andreassen 
, Андреассен 
, אנדרסן 
) is a very rare unisex given name. Predominantly, Andreassen is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Andreassen | Norway, Greenland, Sweden, United States, Denmark |
| Андреассен | Russia |
| אנדרסן | Israel |
Andreas, Andreasen, Andreasson, Andressen, Andriessen, Andréassen, Andréasson, Андреассон, and אנדראס
| hanna martine andreassen Norwegian missionary (b. 1846) |
|
|
|
gunn margit andreassen Norwegian biathlete, NO (b. 1973) |
|
| finn h. andreassen Norwegian journalist, NO (b. 1944) |
|
|
|
stine lund andreassen Norwegian handball player, NO (b. 1994) |
|
| baard andreassen Norwegian musician, NO (b. 1964) |
|
|
| roy-helge andreassen Norwegian politician and musher (b. 1967) |
|
|
| stein jonny andreassen musher |
|
|
| stine andreassen Norwegian association football player (b. 1981) |
|
|
| stine andreassen (b. 1987) |
|