The Society of Saint Sava or Saint Sava Society (Serbian: Друштво „Свети Сава“/Društvo „Sveti Sava“) was a Serbian non-governmental association with the aim of maintaining and protecting the Serb people in the Ottoman Empire, in Old Serbia and Macedonia, and in Austro-Hungarian Bosnia and Herzegovina, founded in 1886 in Belgrade, the capital of the Kingdom of Serbia.

Only three years later, its executive body became part of the Ministry of Foreign Affairs of Serbia.

Its propaganda was so strong that after a sequence of student riots in the Bulgarian Men's High School of Thessaloniki, a group of 34 students accepted the proposal of the Serbian emissaries to go and study free of cost to Belgrade.

Among that group were Dame Gruev, Petar Pop Arsov, Krste Misirkov, Kosta Shahov, etc.

As a result, one of the main reasons for the establishment of the Internal Macedonian Revolutionary Organization (IMRO) by Dame Gruev and Petar Pop Arsov in 1893 was to stop the spread of Serbian propaganda into Macedonia.