Surname Belby (Belby 
) , throughout the world, is a rare cognomen. The family name Belby is habitual in Honduras, where it is a very rare surname, the United Kingdom, and Australia. In absolute terms, this name is the most popular in the United States, Indonesia, and the United Kingdom. Also, Belby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Belby | United Kingdom, United States, Democratic Republic of the Congo, India, Indonesia |