Marii Magdaleny; Latin: Ad sanctam Mariam Magdalenam; colloquially simply as Marynka) is one of the oldest and one of the most prestigious and selective high schools in Poland.

The school itself dates its origins back to 1303 when it was established in the then-existing St. Mary Magdalene's Collegiate Church, with authorization from Bishop of Poznań, Andrzej Zaremba in 1302.

The school received the Medal for Distinguished Service to the City of Poznań and the Decoration of Honour "Meritorious for the Greater Poland Voivodship" in 2003.

The schools central administrative building (built in 1853) is located on the East side of Bernardines' Square at the Southern end of the Garbary street in Poznań's Old Town.

[10][11] Among its alumni the school counts writers (Jan Kasprowicz, Józef Kościelski) Enigma codebreaker Henryk Zygalski, clergy (Primate of Poland Leon Przyłuski, Nobel Peace Prize Nominee Father Marian Żelazek), six rectors of research universities (including Kazimierz Morawski, rector of Jagiellonian University and candidate for the office of President of Poland in 1922), renowned legal scholars (Prof. Michał Sczaniecki, Prof. Witalis Ludwiczak), physicians (Prof. Wiktor Dega, Dr. Karol Marcinkowski) and politicians.