Pop Mašina was a Yugoslav progressive rock band formed in Belgrade in 1972. Pop Mašina is considered one of the most prominent bands of the 1970s Yugoslav rock scene.
The band was formed by bass guitarist and vocalist Robert Nemeček, guitarist and vocalist Zoran Božinović, drummer Ratislav "Raša" Đelmaš and vocalist Sava Bojić. Đelmaš and Bojić left Pop Mašina soon after its formation, and the band continued as a trio with the new drummer, Mihajlo "Bata" Popović. The lineup featuring Nemeček, Zoran Božinović and Popović was the longest lasting, the most successful and the best known Pop Mašina lineup. One of the first bands on the Yugoslav rock scene to move from jazz- and classical music-influenced progressive rock towards heavier rock sound, Pop Mašina managed to gain large popularity as a live act with their hard rock sound with blues, psychedelic and acid rock elements. The band released two studio albums and a live album-their debut Kiselina today considered one of the most notable records in the history of Yugoslav rock-before Nemeček left the band in 1976 for his mandatory army stint.