Colégio Júlio Dinis Internacional School is an educational institution in the city of Porto for students from Nursery age to Secondary School. It also has an international component, founded in September 2023, which implements the Cambridge International curriculum from Primary 1 to A-Level in September 2023.

CJD places a high value on autonomy and curricular flexibility. The school promotes learning through contextualised curricular management within a framework of greater school autonomy.