Cognomen Calaby (Calaby 
) , in the world, is a rare last name. The cognomen Calaby is characteristic of Australia, where it is a rare surname, New Zealand, and the United Kingdom, where it is a very rare surname. Much less frequently, Calaby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Calaby | United Kingdom, South Africa, Australia, United States, New Zealand |
| john h. calaby Australian zoologist and mammalogist, AU (b. 1922) |
|
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