Josip Mijić was born on April 11, 1975 in Travnik. In 2002 he graduated painting from the Academy of  Fine Arts in Široki Brijeg in the class of prof. Ante Kajinić, and in 2005 he finished his postgraduate studies Ars Sacra under the tutelage of the same professor and he acquired an Ars Sacra masters degree. At the Academy of Fine Arts in Mostar he started working on his doctoral thesis in 2010/11 in the field of art, fine art, and painting named “The Role of Dark and the Material in the Visualization of the Transcendental in Sacral Paintings” under the tutelage of prof.Ante Kajinić. He obtained his doctoral degree in 2017 from the Academy of Fine Arts in Široki Brijeg.

 From 2003 until 2012 he was the assistant/senior assistant for the course Theory of Space, from 2003 until 2018 he was the assistant/senior assistant for the course Computer graphics and from 2018 he became an assistant professor, from 2013 until 2018 he was a senior assistant for the course Mali Akt (nude painting) for fourth year students and from 2018 he became the assistant professor, from 2014 until 2018 he was a senior assistant for the Mali Akt course for third year students and from 2018 an assistant professor at the Academy of Fine Arts Široki Brijeg.

He was the Web Master for the web site of the Academy of Fine Arts Široki Brijeg from 2006 until 2015.

From 2006 until 2012 he was the technical editor and a member of the editorial staff of the magazine Akademija of the Academy of Fine arts Široki Brijeg and the Franciscan Gallery.

In 2007 he was a member of the jury at the 28th international competition in mini printing in Cadaques (Spain). He participated in the workshop Preventive protection in museums – caring for and protecting art collections held in the National Museum of Bosnia and Herzegovina and in the National Gallery of Bosnia and Herzegovina in Sarajevo in 2008. He was asked to take part in an international art project The Same Wind the Same Rain held in Chiang Mai (Thailand) in 2012. He spent some time in Paris in the Cite international des arts for the ULUBiH (Bosnia and Herzegovina Association of Visual Arts) in 2013. He was a member of the organizational team for the international project Bomb Gallery, held in Mostar in 2014. In 2018 he stayed at the Kamov residency in Rijeka.

He is a member of the Croatian Association of Visual Artists Split, the Croatian Association of Artists Zagreb, Bosnia and Herzegovina Association of Visual Artists and the ALUMNI ALU association in Široki Brijeg.

His work is a part of many art collections: Franciscan Museum and Široki Brijeg Gallery (Široki Brijeg, BiH), the National Gallery of Bosnia and Herzegovina (Sarajevo, BiH), Catalonian National Library (Barcelona, Spain), Association of Anonymous Artists (Banja Luka, BiH), Gallery “Fonticus” (Grožnjan, Croatia) and others.

So far he has had 34 solo exhibitions and took part in more than a 200 group exhibitions in the country and abroad.