Family name Thayaalan (Thayaalan 
) , in the world, is an extremely rare last name. The last name Thayaalan is characteristic of Canada, where it is an extremely rare surname, and Malaysia. More frequently, Thayaalan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thayaalan | Canada, Malaysia |
Kumar, Murugan, Jayarahman, Thayalan, and Narainasamy