Across the world, Posthumus (Posthumus 
, Postum 
) is an extremely rare feminine first name. Much more frequently, Posthumus is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Posthumus | Netherlands, Canada, United States, Germany, South Africa |
| Postum | India, United States, South Africa |
|
gosling posthumus Dutch painter, NL (b. 1800) |
|
| obe posthumus NL (b. 1883) |
|
|
| barta posthumus Dutch Righteous Among the Nations, NL (b. 1894) |
|
|
| arend posthumus Dutch Righteous Among the Nations, NL (b. 1909) |
|
|
| divan posthumus South African cricketer (b. 1994) |
|