Family name Fjortoft (Fjortoft 
) , around the world, is a rare last name. The cognomen Fjortoft is habitual in Norway, where it is quite a rare surname, the United Kingdom, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Norway, the United States, and the United Kingdom. Much less frequently, Fjortoft is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fjortoft | Norway, Spain, Canada, United States, United Kingdom |