Family name Karalasingham (Karalasingham 
) , around the globe, is a rare surname. The family name Karalasingham is habitual in Sri Lanka, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Karalasingham | Sri Lanka, Malaysia, Australia, United States, Canada |
| v. karalasingham (b. 1921) |
|