Last name Ingnatius (Ingnatius 
) , globally, is a very rare family name. The cognomen Ingnatius is habitual in Nigeria, where it is an extremely rare surname, Malaysia, and India. More prevalently, Ingnatius is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ingnatius | Nigeria, Indonesia, South Africa, United States, India |