Family name Venkatachalapathy (Venkatachalapathy 
) , in the entire world, is a rare cognomen. The family name Venkatachalapathy is characteristic of Singapore, where it is a rare surname, Ireland, and Malaysia, where it is a very rare surname. In absolute terms, it is the most numerous in India, the United States, and Singapore. Likewise, Venkatachalapathy is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Venkatachalapathy | Malaysia, Ireland, United States, Singapore, India |
| a. r. venkatachalapathy Indian academic, IN (b. 1967) |
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| r thirupathy venkatachalapathy researcher |
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| saradha venkatachalapathy researcher |
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