The Popular Front for the Liberation of Oman (in Arabic: الجبهة الشعبية لتحرير عُمان, romanized: al-Jabha aš-Šaʿbiyya li-Taḥrīr ʿUmān, PFLO) was a Marxist and Arab nationalist revolutionary organisation in the Sultanate of Oman. It fought against the Sultan (ruler) in the Dhofar Rebellion from the PFLO's foundation until the suppression of the insurgency in 1976.