Cognomen Халворсен (Halvorsen 
, Халворсен 
) , worldwide, is a common family name. The cognomen Халворсен is characteristic of Norway, where it is a common surname, Bermuda, where it is quite a common surname, and Denmark, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Norway, the United States, and Denmark.
| VARIANT | COUNTRY |
|---|---|
| Halvorsen | Sweden, Norway, United States, Canada, Denmark |
| Халворсен | Russia, Ukraine |