Al-Mu'tamid Muhammad ibn Abbad al-Lakhmi, also known as Abbad III, was the third and last ruler of the Taifa of Seville in Al-Andalus, as well as a renowned poet. He was the final ruler of the Arab Abbadid dynasty of Seville, before being deposed by the Almoravids in 1091.

The Abbadid dynasty or Abbadids was an Arab dynasty from the tribe of Banu Lakhm of al-Hirah, which ruled the Taifa of Seville in al-Andalus following the downfall of the Caliphate of Cordoba in 1031. After the collapse, they were the most powerful Taifa and before long absorbed most of the others. Abbadid rule lasted from about 1023 until 1091, but during the short period of its existence it exhibited singular energy and typified its time.