Osmakovo is a village in the municipality of Pirot, Serbia. According to the 2002 census, the village has a population of 292 people.Popis stanovništva, domaćinstava i Stanova 2002. Knjiga 1: Nacionalna ili etnička pripadnost po naseljima. Republika Srbija, Republički zavod za statistiku Beograd 2003.

Archaeology Osmakovo houses the earliest epigraphic monument to Sol Invictus found in the Central Balkans. According to the inscription, it was made by Valerius Iucundus.

Paleontology Osmakovo has yielded the first known dinosaur body fossils from Serbia, including a sauropod ulna and sixteen small teeth attributed to various theropods.

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