Family name Ferdinandus (Ferdinando 
, Ferdinandus 
, Фердинанд 
) , all over the world, is a common cognomen. The surname Ferdinandus is characteristic of Sri Lanka, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Armenia. In absolute terms, this name is the most popular in Indonesia, Sri Lanka, and Italy. More frequently, Ferdinandus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ferdinando | Germany, Italy, Brazil, Indonesia, Sri Lanka |
| Ferdinandus | Germany, Brazil, United States, Indonesia, Sri Lanka |
| Фердинанд | Kazakhstan, Uzbekistan, Bulgaria, Russia, Armenia |
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alexandre ferdinandus FR (b. 1850) |
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| pantas ferdinandus Indonesian politician (born 1957), ID (b. 1957) |
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| pingkan margareth theodora ferdinandus Indonesian political candidate, ID |
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| justin ferdinandus researcher |
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| marcy saartje ferdinandus ID (b. 1971) |
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| stevie ongen ferdinandus |
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| florien ferdinandus |
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