Surname Janečko (Janečko 
, Янечко 
) , in the entire world, is a rare cognomen. The last name Janečko is characteristic of Czechia, where it is a rare surname, Ukraine, and Kazakhstan, where it is a very rare surname. In absolute terms, it most frequently occurs in Eastern Europe, particularly Ukraine, Czechia, and Russia.
| františek janečko (b. 1894) |
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tomáš janečko Czech figure skater, CZ (b. 1986) |
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| michal janečko (b. 1963) |
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| františek janečko Slovak biathlonist and ski runner, SK (b. 1987) |
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