Completion of Secondary Education: Applicants must have completed a four-year secondary school program or its equivalent. 

State Matura Examination: Croatian students are required to pass the State Matura exams, which assess proficiency in subjects like Croatian language, Mathematics, and a foreign language. 

Entrance Examinations: Some faculties may require additional entrance exams to assess specific knowledge or skills related to the chosen field of study

Language Proficiency: For programs taught in Croatian, proficiency in the Croatian language is required. For programs taught in English, proof of English language proficiency, such as TOEFL or IELTS scores, may be necessary.

Official Transcripts: Submission of official transcripts from previous educational institutions is required to verify academic performance

Curriculum Vitae (CV): A detailed CV outlining educational background, extracurricular activities, and any relevant experience may be required. 

Motivation Letter: A letter explaining the applicant's interest in the chosen program and their career aspirations may be part of the application process. 

It's important to note that specific programs may have additional requirements or variations in the criteria listed above. Applicants are advised to consult the official website of the University of Zagreb or contact the relevant faculty for detailed and up-to-date information.