Cognomen Berthinussen (Berthinussen 
) , globally, is a rare family name. The last name Berthinussen is habitual in Norway, where it is quite a rare surname, Poland, where it is a very rare surname, and Australia. Measured by absolute frequency, it most frequently occurs in Norway, Poland, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Berthinussen | Poland, Australia, Norway, United Kingdom |
| ingrid berthinussen Norwegian zoologist (b. 1967) |
|