The Macedonian Society or Secret Macedonian Society (Macedonian: Тајниот македонски комитет) was secret organization established in 1886 by Macedonian Slavs in Sofia, Bulgaria, to promote a kind of Macedonian pro-Serbian identity, distinguished especially from the ethnic identity of the Bulgarians. Its leaders were Naum Evrov, Kosta Grupčev, Vasilij Karajovev and Temko Popov.
In 1886 the Bulgarian government revealеd the organization and it was disbanded. Part from its member went in the same year to Belgrade, where the Government of Serbia established a cooperation with the Macedonian Society. Through support to the Macedonian movement the Government of Serbia had intention to suppress the process of Bulgarization of Macedonian Christian Slavs or to debulgarize them. In accordance with the Serbo-Macedonian cooperation in the same year in Constantinople was founded the Association of Serbo-Macedonians. This compromise with the Serbian interests in Macedonia, led it later to abandonment of its separatist program altogether.