Cognomen Sagatu (Sagatu 
) , globally, is a very rare last name. The cognomen Sagatu is habitual in New Zealand, where it is a very rare surname, the United States, where it is an extremely rare surname, and India. More prevalently, Sagatu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sagatu | New Zealand, India, Spain, United States |