| Abbad II al-Mu'tadid | |
| Succession: | Emir of the Seville Taifa |
| Reign: | 1042–1069 |
| Predecessor: | Abu al-Qasim Muhammad ibn Abbad |
| Successor: | Al-Mu'tamid ibn Abbad |
| Birth Place: | Al-Andalus |
| Death Date: | 28 February 1069 |
| Death Place: | Al-Andalus |
| Burial Place: | Al-Andalus |
| Full Name: | Abu ʿAmr ʿAbbad II al-Muʿtadid (Arabic: المعتضد بالله أبو عمرو عبَّاد) |
| Dynasty: | Abbadid |
| Father: | Muhammad ibn Abbad |
| Issue: | Mu'tamid (son) |
| Issue-Type: | Children |
| Religion: | Sunni Islam |
Abu ʿAmr ʿAbbad II al-Muʿtadid (; died 28 February 1069), a member of the Abbadid dynasty, was the second independent emir of Seville (reigned 1042–1069) in Al-Andalus. His father, Abu al-Qasim Muhammad ibn Abbad, had established the Taifa of Seville, and Abbad became its emir when Abu al-Qasim died in 1042. He initially had amicable relations with his neighbour Ferdinand I, Count of Castile and King of León, and tolerated the Christian faith in his own lands. Among other acts of friendship, he authorized the transfer of Saint Isidore's relics from Seville to the Basilica of San Isidoro in León.
Al-Muʿtadid expanded his territory by conquering numerous Islamic taifas (independent principalities),[1] including those of Mértola (1044–45), Huelva (1051), Algeciras (1055), Ronda (1065) and Arcos (1069). In 1053, he invited a number of minor Berber princes from the south to his palace in Seville, suffocating them to death by treating them to an open steam bath, having first sealed up all of the openings in the bathhouse.[2] He also fought against the Zirids of Granada and the Aftasids of Badajoz, but with no conclusive results. In 1063, when Ferdinand I appeared with an army on the outskirts of Seville, Al-Muʿtadid was forced to acknowledge his suzerainty and to pay him tribute.
Al-Muʿtadid died in 1069 and was succeeded by his son, al-Mu'tamid ibn Abbad.