Last name ตติ (Tti 
, ตติ 
) , in all the world, is a common cognomen. The surname ตติ is characteristic of India, where it is quite a rare surname, Algeria, where it is a rare surname, and Tunisia. Measured by absolute frequency, it most frequently occurs in India, Egypt, and Algeria. Much less frequently, ตติ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tti | Myanmar, Egypt, India, Democratic Republic of the Congo, Algeria |
| ตติ | Thailand |