Surname Holgan (Holgan 
) , in all the world, is a very rare cognomen. The family name Holgan is habitual in Portugal, where it is a very rare surname, the United Kingdom, and Nicaragua. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Portugal. Also, Holgan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Holgan | Democratic Republic of the Congo, United Kingdom, Nicaragua, United States, Portugal |