Surname Костов (Kostov 
, Kostow 
, Костов 
) , in all the world, is a common family name. The last name Костов is characteristic of Bulgaria, where it is a common surname, North Macedonia, where it is quite a common surname, and Serbia.
| VARIANT | COUNTRY |
|---|---|
| Kostov | Greece, Romania, North Macedonia, Bulgaria, Serbia |
| Kostow | Germany, Denmark, Canada, Bulgaria, United States |
| Костов | Moldova, Ukraine, Belarus, Bulgaria, Russia |
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стоян костов Bulgarian politician, BG (b. 1832) |
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стойо костов BG (b. 1846) |
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спиро костов BG (b. 1852) |
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панайот костов BG (b. 1874) |
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иван костов BG (b. 1885) |
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дончо костов botanist (1897-1949), BG (b. 1897) |
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трайчо костов Bulgarian politician (1897-1949), BG (b. 1897) |
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| павел костов BG (b. 1842) |
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| лазар костов BG (b. 1845) |
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димитър костов BG (b. 1895) |
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| костадин костов BG (b. 1850) |
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атанас костов Bulgarian politician, BG (b. 1911) |
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иван костов Bulgarian mineralogist, BG (b. 1913) |
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сотир костов Bulgarian painter (1914-1992), BG (b. 1914) |
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| алекса костов Bulgarian revolutionary, BG (b. 1865) |
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Г-Н, Спас, Стою, Янко, Ясен, Ілля, Іван, Ігор, Юрий, Юрій, Сава, Петър, Кольо, Коста, Косто, Костя, Кирил, Марин, Марко, Марта, Минчо, Калин, Егор, Емил, Иван, Иво, Яни, Лъчезар, Коля, Крум, Марк, Миша, Асен, Боян, Гого, Петр, Деян, Димо, Диан, Ники, Ваня, Васе, Лара, Олег, Илья, Илия, Милан, and Милен