Janša
Janša and Jansa are West Slavic surnames derived from the diminutives of the given name Jan. Notable people with the surnames include:
- Alfred Jansa
- Anton Janša, Slovenian apiculturist and painter
- František Jansa
- Janez Janša, Slovenian politician and Prime Minister
- Janez Janša, Slovenian author, director and performer
- Janez Janša, Slovenian visual artist
- Janez Janša, Slovenian performance artist
- Joško Janša
- Leopold Jansa, Bohemian composer
- Lovro Janša, birth name of Laurenz Janscha, Austrian painter and engraver
- Milan Janša
- Miloš Janša
- Tone Janša, Slovenian jazz musician
- Václav Jansa
- Vlastimil Jansa