First Rijeka Croatian Gymnasium () is a high school in Rijeka, Croatia.
The school inherits the tradition of the original Jesuit gymnasium in Rijeka. It survived through a number of difficult historical periods, and was even formally abolished in 1896 when the Suà ¡ak gymnasium was left as the only Croatian gymnasium in the city, only restored after WWII, and in 1978 during the educational reforms under Stipe à  uvar, in turn restored after Croatian independence.
After the school year 2023/24, 101 graduates of this gymnasium enrolled at an institution of higher learning in Croatia, or 94.39% of students who took up the nationwide Matura exams. The most common destinations for these students were the University of Rijeka faculties of economics, medicine, maritime studies, humanities and social sciences, and engineering.