Last name Tonra (Tonra 
) , in the world, is a rare cognomen. The surname Tonra is characteristic of Ireland, where it is quite a rare surname, Indonesia, where it is a rare surname, and the United States, where it is a very rare surname. Much less frequently, Tonra is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tonra | Indonesia, United Kingdom, Ireland, Thailand, United States |
| mark tonra American cartoonist, US (b. 1966) |
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| christopher tonra researcher (ORCID 0000-0002-3499-2576) |
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| james r tonra researcher (ORCID 0000-0003-3284-7516) |
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| elena tonra British singer, GB (b. 1990) |
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