Family name Rajki (Rajki 
) , worldwide, is a rare last name. The last name Rajki is habitual in Hungary, where it is quite a rare surname, Croatia, where it is a rare surname, and Switzerland, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Hungary, the United States, and Croatia. Also, Rajki is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rajki | Germany, Hungary, Croatia, United States, India |
| rajki józsef Hungarian sculptor (1894-1963), HU (b. 1894) |
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| rajki márton Hungarian barrister and revolutionary (1901-1959), HU (b. 1901) |
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| rajki béla Hungarian water polo player and coach, HU (b. 1909) |
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| rajki sándor HU (b. 1921) |
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| igor rajki (b. 1965) |
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