Janko
[ˈjɛŋko]Meaning
diminutive of Janez or Jan, from the vernacular form of Latin Johannes
Background Story
Janko is a diminutive of Janez or Jan, and derives from the vernacular form of Latin Johannes. In Polish it is formed from Jan with the suffix -ko, and it is recorded there as a feminine name as well. The name also derives from diminutive forms of János in Hungarian and Yakov in Ashkenazi Jewish use. The surnames Janković and Jankovič descend from it.
Variations
Yanko, Janek, Jania

Related Names
Janek
Estonian, Polish and Czech diminutive of Jaan or Jan
Janos
No documented meaning in the sources checked
Jovan
Serbian and Macedonian form of John
Jarek
A Polish name meaning 'fierce' or 'strong'
Jasko
Derived from the Slavic name, meaning 'God will add.'
Jaxon
English variant of Jackson
Jirko
A name with Slavic roots.
Joost
Dutch form of Iudocus, sometimes a diminutive of Justus or Jozef
Josip
Croatian and Slovene form of Joseph
Jussi
Finnish form of John