Abū 'Ubayd ibn Mas'ūd ibn 'Amr ibn 'Umayr ibn 'Awf ibn Uqda ibn Ghayra ibn Awf ibn Thaqif al-Thaqafi (also al-Thaqīfī) (Arabic: أبو عبيد بن مسعود بن عمرو بن عمير بن عوف بن عقدة بن غيرة بن عوف بن ثقيف الثقفي), or simply Abu Ubayd (أبو عبيد), was a commander in the army of the Rashidun Caliphate. He was from Ta'if in western Arabia, and belonged to the tribe Banu Thaqif.