Family name Alponsu (Alponsu 
) , globally, is a rare surname. The cognomen Alponsu is characteristic of Sri Lanka, where it is a rare surname, Australia, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Much less frequently, Alponsu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alponsu | Australia, Philippines, Italy, India, Sri Lanka |