Sulaymān I, (full name Sulaymān Ibn ʿAbd Allāh al-Kāmil, Arabic: سليمان بن عبد الله الكامل), sometimes called Sidi Sliman or Moulay Slimane, was the brother of Idris I of Morocco, son of the great-grandson of the caliph Ali and Fatima, daughter of the Islamic prophet Muhammad.

He was probably born around 730 and died in 814,[1] perhaps in Ain El Hout in the province of Tlemcen in Algeria.

[2] According to Ibn Khaldoun, he reached Tlemcen after the assassination of his brother Idris I in 791 and took control of it.

[3] But according to Ibn Idhari and Al-Bakri, he would have settled in Tlemcen while his brother was alive and probably with his approval.

[4] This is the version retained by historians Philippe Sénac and Patrice Cressier who indicate that Sulaymān I was governor of Tlemcen between 786 and 813.