People:
- Janko Tipsarević, Serbian tennis player
- Marc Janko, Austrian football player
- Paul von Janko, inventor of the Janko keyboard
- Richard Janko, British-American classicist
- Zvonimir Janko, mathematician
- Janko Leskovar
In mathematics:
- Janko group
- Janko group J1
- Janko group J2
- Janko group J3
- Janko group J4
Other:
- Janko keyboard
- Jankwa (or Janko), a Newar ritual