Last name Nallappan (Nallappan 
) , around the globe, is a rare surname. The last name Nallappan is habitual in Malaysia, where it is quite a rare surname, Singapore, where it is a rare surname, and India, where it is an extremely rare surname. More prevalently, Nallappan is the forename as well as the last name.
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| Nallappan | Singapore, Malaysia, India, United States, United Kingdom |
| t. k. nallappan Indian politician, IN (b. 1935) |
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| nallappan gunasekaran researcher |
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| kamachisree nallappan researcher |
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| meenakshii nallappan researcher ORCID ID = 0000-0002-0953-2295 |
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| nallappan mohanraj Indian footballer, IN (b. 1989) |
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Raja, Ravichandran, Thangaraju, Rajeshwari, Ramanathan, Sethupathy, Manikandan, Rajendran, Yuvaanesswary, Ramasamy, Marappan, Deepiga, Perumal, Kumaru, Nallu, Devan, Soomu, Devi, Kandasamy Vandaiyar, and Balasubramanian