The Chief of the General Staff of Yugoslavia (Serbo-Croatian: Начелник Генералштаба / Načelnik Generalštaba; Slovene: Načelnik Generalštaba; Macedonian: Началник на Генералштабот, romanized: Načalnik na Generalštabot) refers of the chief of the General Staff of the Royal Yugoslav Army from 1918 to 1941, the Yugoslav People's Army from 1945 to 1992 and the Armed Forces of Serbia and Montenegro (officially named the Armed Forces of Yugoslavia between 1992 and 2003) from 1992 to 2006.

The Chief of the General Staff (Serbo-Croatian: Načelnik Generalštaba - NGŠ, Начелник Генералштаба - НГШ; Macedonian: Началник на Генералштабот; Slovene: Načelnik Generalštaba) was the chief of staff of the General Staff of the Yugoslav People's Army (JNA) during its existence from 1945 to 1992.

While the Federal Secretary of People's Defence (defence minister) headed the Federal Secretariat of People's Defence (Savezni sekretarijat za narodnu odbranu - SSNO) and it was the most effective military person, the Chief of the General Staff (which was the formational part of SSNO) was the most professional and staff body.

This lasted until 2003 when it was reconstituted as a state union called Serbia and Montenegro.

In 2006 both countries declared independence and parted ways.