The Sremska Mitrovica Gymnasium or Mitrovica Gymnasium (Serbian: Митровачка гимназија, Mitrovačka gimnazija) is a public coeducational high school (gymnasium, similar to preparatory school) located in Sremska Mitrovica, city in Vojvodina, Serbia.

[2] Historically, the school was named after Peter I of Serbia and Ivo Lola Ribar.

[2] During the World War II in Yugoslavia and Ustasha regime rule over Syrmia, authorities of the Independent State of Croatia took over the supervision of the gymnasium.

[3] In 1960s the institution was named after Ivo Lola Ribar, Yugoslav communist politician and military leader killed by a German bomb in 1943.

[3] Notable alumni of the high school among others are Mileva Marić, Vaso Čubrilović, Miloš N. Đurić, Slavko Vorkapić, Siniša Kovačević, Petar Kralj and others.