The Fifth Gymnasium (Croatian: V. gimnazija, Peta gimnazija) is a high school in Zagreb, Croatia specialising in science and mathematics. It was opened on 7 November 1938. Today it has about 900 students in 28 classes. It is considered to be the most prestigious gymnasium in Zagreb alongside the XV Gymnasium. Students are known for often excelling in mathematics, physics, chemistry, biology, Latin, computer science, history, geography and logic.