International applications are reviewed based on academic qualifications, language proficiency, and program-specific criteria. Each faculty assesses whether an applicant's prior education aligns with Croatian academic standards. Non-EU applicants may need to have their documents officially recognized through the Croatian Agency for Science and Higher Education. English-taught programs require proof of language proficiency, while some programs mandate entrance exams or interviews. Admission decisions are based on academic records, motivation letters, and relevant experience. The university provides support for document verification and visa processes to ensure a smooth application experience for international students.

Some faculties require entrance exams, especially for competitive programs like medicine, law, and engineering. Croatian students take the State Matura Examination, which serves as an entrance requirement. International students applying for specific programs may need to complete subject-specific tests or interviews. Certain faculties also assess applicants based on their previous academic performance, motivation letters, and recommendation letters. For master’s programs, entrance exams are less common, but some require an interview or a research proposal. Applicants should check with their desired faculty to confirm specific admission requirements.