Family name Gonsai (Gonsai 
) , worldwide, is a rare last name. The surname Gonsai is characteristic of India, where it is a very rare surname, the United Kingdom, and Philippines, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in India, the United Kingdom, and the United States. More frequently, Gonsai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gonsai | United States, United Kingdom, India, Philippines |