Petar Kovačević (Serbian Cyrillic: Петар Ковачевић; ??
In the great Christian coalition against the Ottomans, he allied with the despot Đurađ Branković.
The great Christian coalition was led by the Hungarian king Vladislav I and Janko Hunyadi, the lord of Transylvania.
Together with the despot Đurđe Branković, he captured Srebrenica in 1443, but he soon abandoned Serbian despot and in 1455 he attacked him and Srebrenica on order of his king, Stjepan Tomaš.
He was killed in this battle by the Serbians and one document records it with the words: "Dmitar Radojević killed Petar Kovačević near Srebrenica" (Ubi Dmitar Radojević Petra Kovačevića pod Srebrenicom)