Tamim ibn al-Muizz was the fifth ruler of the Zirids in Ifriqiya

Ifriqiya

In medieval history, Ifriqiya or Ifriqiyah was the area comprising the coastal regions of what are today western Libya, Tunisia, and eastern Algeria. This area included what had been the Roman province of Africa, whose name it inherited....

 (1062–1108).

Tamim took over from his father Al-Muizz ibn Badis

Al-Muizz ibn Badis

Al-Muizz ibn Badis ; 1008–1062) was the fourth ruler of the Zirids in Ifriqiya, reigning from 1016 to 1062.Al-Muizz ascended the throne as a minor following the death of his father Badis ibn Mansur, with his aunt acting as regent. In 1016 there was a bloody revolt in Ifriqiya in which the Fatimid...

 (1016–1062) at a time when the Zirid realm found itself in a state of disintegration following the invasion of the Banu Hilal

Banu Hilal

The Banu Hilal were a confederation of Arabian Bedouin tribes that migrated from Upper Egypt into North Africa in the 11th century, having been sent by the Fatimids to punish the Zirids for abandoning Shiism. Other authors suggest that the tribes left the grasslands on the upper Nile because of...

. Only the coastal towns were under control, and a reconquest of the hinterland from the Bedouin failed. Even on the coast the Zirids were not unchallenged - Tunis

Tunis

Tunis is the capital of both the Tunisian Republic and the Tunis Governorate. It is Tunisia's largest city, with a population of 728,453 as of 2004; the greater metropolitan area holds some 2,412,500 inhabitants....

 was lost to the Banu Hurasan (1063–1128). The capital Mahdia

Mahdia

Mahdia is a provincial centre north of Sfax. It is important for the associated fish-processing industry, as well as weaving. It is the capital of Mahdia Governorate.- History :...

 was attacked by Genoa

Genoa

Genoa |Ligurian]] Zena ; Latin and, archaically, English Genua) is a city and an important seaport in northern Italy, the capital of the Province of Genoa and of the region of Liguria....

 and Pisa

Pisa

Pisa is a city in Tuscany, Central Italy, on the right bank of the mouth of the River Arno on the Tyrrhenian Sea. It is the capital city of the Province of Pisa...

 in 1088 and forced to pay a high ransom - a sign of the growing dominance of Christian powers in the Mediterranean which also manifested itself in the Norman conquest of Sicily (1061–1062).

Tamim's son Yahya ibn Tamim inherited what was left of the Zirid kingdom in 1108.