Vasil Kostov Glavinov (Bulgarian and Macedonian: Васил Костов Главинов) (1868 or 1869 in Köprülü, now Veles – 1929 in Sofia) was a Macedonian Bulgarian left-wing politician from Ottoman Macedonia, and an activist of the Bulgarian workers' movement. Per post-WWII historiography in North Macedonia he was an ethnic Macedonian.