Family name Tetlo (Tetlo 
) , around the world, is a very rare cognomen. The cognomen Tetlo is habitual in Croatia, where it is quite a rare surname, Australia, where it is a very rare surname, and New Zealand. Also, Tetlo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tetlo | Botswana, New Zealand, Australia, Croatia, South Africa |