| Josip Križan | |
| Birth Date: | 31 December 1841 |
| Birth Place: | Kokoriči, Duchy of Styria, Austrian Empire |
| Death Place: | Varaždin, Province of Croatia & Slavonia, Kingdom of Serbs, Croats and Slovenes |
| Occupation: | Mathematician, physicist, astronomer, philosopher |
Josip Križan (December 31, 1841 in Kokoriči - July 16, 1921 in Varaždin, Croatia) was a Slovenian mathematician, physicist, philosopher and astronomer.
He studied mathematics, physics and philosophy in Graz and between 1867 and 1869 obtained a doctorate to become a professor.