Last name Devadass (Devadass 
) , all around the world, is a rare family name. The cognomen Devadass is characteristic of Malaysia, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Singapore. Measured by absolute frequency, it most frequently occurs in Malaysia, India, and United Arab Emirates. Also, Devadass is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Devadass | South Africa, United Arab Emirates, Malaysia, United States, India |
| devadass ambrose mariadoss Roman Catholic bishop, IN (b. 1947) |
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| george devadass CSI bishop |
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| darren isaac devadass badminton player, MY (b. 1995) |
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