Family name Tangoi (Tangoi 
) , all around the world, is a rare cognomen. The surname Tangoi is habitual in Indonesia, where it is a very rare surname, the United States, where it is an extremely rare surname, and India. Very seldom, Tangoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tangoi | India, Indonesia, United States |