Surname هولبروك (Holbrook 
, Holbrooke 
, هولبروك) , all over the world, is a common last name. The cognomen هولبروك is characteristic of the United States, where it is quite a rare surname, the United Kingdom, and New Zealand. In absolute terms, this name is the most popular in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Holbrook | Australia, Kenya, Canada, United Kingdom, United States |
| Holbrooke | Australia, Canada, United Kingdom, United States, Brazil |