Family name Letchumanan (Letchumanan 
) , all over the world, is quite a common last name. The cognomen Letchumanan is characteristic of Malaysia, where it is quite a common surname, Singapore, where it is quite a rare surname, and Sri Lanka, where it is a rare surname. Much less frequently, Letchumanan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Letchumanan | Indonesia, Sri Lanka, Malaysia, Singapore, India |
| vengadesh letchumanan researcher |
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| devanthiran letchumanan researcher |
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| kalaiharasan letchumanan Malaysian footballer, MY (b. 1996) |
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Mr, Hema, Vani, Usha, Manan, Malar, Madam, Mohan, Mogan, Joan, Megla, Santi, Shama, Shoba, Sithy, Sivam, Suren, Sumen, Selvi, Muthu, Gobi, Gopi, Guna, Ms, Aru, Uma, Mark, Mani, Mala, Mona, Miss, Suri, Sumi, Alan, Arun, Kala, Kl Shankar, Puan, Ravi, Ruba, Devi, Deya, Segar, and Chris