Apostol Petkov Terziev was a Macedonian Bulgarian revolutionary and one of the leaders of the national liberation movement in Ottoman Macedonia. He was a leading Komitadji in the armed units of the Bulgarian Macedonian-Adrianople Revolutionary Committees and later participated in the Bulgarian People's Macedonian-Adrianople Revolutionary Organization. He took part in the battles against the Ottoman authorities in the Ilinden-Preobrazhenie Uprising and Macedonian Struggle. Historians from North Macedonia consider him an ethnic Macedonian historical figure.

The Macedonian Struggle was a series of social, political, cultural and military conflicts that were mainly fought between Greek and Bulgarian subjects who lived in Ottoman Macedonia between 1893 and 1912. The conflict was part of a wider guerilla war in which revolutionary organizations of Greeks, Bulgarians and Serbs all fought over Macedonia. Gradually the Greek and Bulgarian bands gained the upper hand. Though the conflict largely ceased by the Young Turk Revolution, it continued as a low intensity insurgency until the Balkan Wars.