Surname Banwatt (Banwatt 
) , worldwide, is a very rare last name. The surname Banwatt is habitual in New Zealand, where it is a very rare surname, the United Kingdom, and Canada, where it is an extremely rare surname. In absolute terms, this name is the most popular in the United Kingdom, India, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Banwatt | United Kingdom, United States, India, Canada, New Zealand |