Fadala ibn Ubayd al-Ansari (Arabic: فَضَالَةَ بْنِ عُبَيْدٍ الأَنْصَارِيِّ, romanized: Faḍāla ibn ʿUbayd al-Anṣārī; died 673 or 678/79) was the qadi of Damascus and a commander under the Umayyad caliph Mu'awiya I (r. 661–680). The Islamic and Byzantine sources variously report several military campaigns, including a number of naval raids, headed by Fadala between 667/68 and 672. His wintering in Cyzicus has been associated with the first Arab siege of Constantinople. He is generally held to have died as qadi in Damascus in 673 by the Muslim sources, though Khalifa ibn Khayyat places his death in 678/79.