Last name Rajaji (Rajaji 
) , in the entire world, is quite a rare family name. The surname Rajaji is characteristic of Taiwan, where it is quite a rare surname, Singapore, where it is a rare surname, and Saudi Arabia. Not in comparison with a country's population, it is commonest in Taiwan, India, and Saudi Arabia. More prevalently, Rajaji is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajaji | Saudi Arabia, Malaysia, Singapore, Taiwan, India |
| sanisvara nethaji rayer a/l rajaji Malaysian politician, MY (b. 1971) |
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| umamaheswari rajaji researcher (ORCID 0000-0003-4454-1944) |
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