Last name Lett-Janga (Lett-Janga 
) , in the world, is an extremely rare cognomen. The surname Lett-Janga is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Lett, and a last name Janga.
| VARIANT | COUNTRY |
|---|---|
| Lett-Janga | United States |