Family name Rangaswami (Rangaswami 
) , worldwide, is quite a rare surname. The cognomen Rangaswami is habitual in India, where it is a rare surname, Australia, where it is a very rare surname, and the United Kingdom. Measured by absolute frequency, it is commonest in India, the United States, and the United Kingdom. More prevalently, Rangaswami is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rangaswami | Australia, Germany, United Kingdom, United States, India |
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j.p. rangaswami Indian businessman, IN (b. 1957) |
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| g. rangaswami botanist (b. 1925) |
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m. r. rangaswami Indian businessman |
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| channarayapatna venkataramiah rangaswami (b. 1926) |
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| raju rangaswami Ph.D. University of California, Santa Barbara 2004 |
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| venkata pathi rangaswami IN |
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