Globally, Кольо (Kolo 
, Кольо 
, Kolyo 
) is a common mostly masculine, but seldom female forename. The first name Кольо is characteristic of Bulgaria, where it is a common male name, Nigeria, where it is quite a common largely masculine, but infrequently girly name, and Greece, where it is quite a rare masculine name. In absolute terms, it most frequently occurs in Nigeria, Bulgaria, and India. Also, Кольо is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kolo | Nigeria, Democratic Republic of the Congo, Indonesia, Ivory Coast, Bulgaria |
| Кольо | Bulgaria, Russia, Ukraine |
| Kolyo | Bulgaria, South Africa, Greece, United States, India |
| Koliu | Nigeria, Malaysia, United States, Myanmar, India |
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кольо радев-черкеза BG (b. 1850) |
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кольо тенев BG (b. 1910) |
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кольо йонков BG (b. 1921) |
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| кольо стойчев BG (b. 1881) |
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| кольо карагьозов Bulgarian businessman and diplomat, BG (b. 1896) |
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| кольо кънев BG (b. 1915) |
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| кольо георгиев Bulgarian writer, BG (b. 1926) |
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| кольо коларов BG (b. 1924) |
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| кольо арабаджиев BG (b. 1924) |
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| кольо витковски BG (b. 1925) |
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| кольо дончев bulgarian actor, BG (b. 1940) |
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| кольо георгиев Bulgarian politician, BG (b. 1940) |
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| кольо николов Bulgarian writer, BG (b. 1942) |
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| кольо севов BG (b. 1933) |
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| кольо бъчваров BG (b. 1953) |
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