Surname Agasthian (Agasthian 
) , all around the world, is a very rare family name. The family name Agasthian is characteristic of Singapore, where it is a rare surname, Malaysia, where it is an extremely rare surname, and India. Likewise, Agasthian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Agasthian | United States, South Africa, Malaysia, India, Singapore |