Jawhar as-Siqilli, Fatimid statesman
Al-Qaid Jawhar ibn Abdallah (Arabic: جوهر بن عبد الله, romanized: Jawhar ibn ʿAbd Allāh; died 28 April 992) was a Shia Muslim Fatimid general from the Byzantine (Eastern Roman) Empire who led the conquest of Maghreb, and subsequently the conquest of Egypt, for the 4th Fatimid Imam-Caliph al-Mu'izz li-Din Allah. He served as viceroy of Egypt until al-Mu'izz's arrival in 973, consolidating Fatimid control over the country and laying the foundations for the city of Cairo. After that, he retired from public life until his death.

He is variously known with the nisbas al-Siqilli (Arabic: الصقلي, romanized: al-Ṣiqillī, lit. 'The Sicilian'), al-Saqlabi, al-Rumi (Arabic: الرومي, romanized: al-Rūmī, lit. 'the Roman'); and with the titles al-Katib (Arabic: الكَاتِب, romanized: al-Kātib, lit. 'the Secretary') and al-Qa'id (Arabic: القائد, romanized: al-Qāʾid, lit. 'the General').