International applicants to the Open University of Catalonia (UOC) undergraduate programs must typically have their secondary education credentials recognized in Spain, which frequently requires homologation (official recognition) through the Spanish Ministry or UNEDasiss. They must then apply through Spain's Accesnet portal for pre-enrollment, demonstrating adequate funds, language proficiency (Spanish, Catalan, or English), and providing standard documents like passports and certificates, with specific procedures depending on your home country's educational system.