Family name Kiilsgaard (Kiilsgaard 
) , in the world, is a very rare last name. The family name Kiilsgaard is characteristic of Denmark, where it is a rare surname, the United States, where it is an extremely rare surname, and Argentina. Measured by absolute frequency, it is the most numerous in the United States, Denmark, and Philippines.
| VARIANT | COUNTRY |
|---|---|
| Kiilsgaard | Denmark, United States, Philippines, Argentina |
| thor h. kiilsgaard (b. 1919) |
|