Surname Oceanus (Ocean 
, Osean 
, Ozean 
) , worldwide, is quite a rare family name. The surname Oceanus is habitual in Jersey, where it is quite a common surname, Maldives, where it is quite a rare surname, and Taiwan. In absolute terms, it is the most numerous in Indonesia, Bangladesh, and the United States. Also, Oceanus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ocean | Bangladesh, Indonesia, Taiwan, China, Democratic Republic of the Congo |
| Osean | United States, France, Indonesia, Romania, Brazil |
| Ozean | Kazakhstan, United States, South Africa, Nigeria, Brazil |
| Oceanus | Spain, Brazil, Mexico, United States |