Al-Qaid Jawhar ibn Abdallah (Arabic: جوهر بن عبد الله, romanized: Jawhar ibn ʿAbd Allāh, better known as Jawhar al Siqilli, al-Qaid al-Siqilli, "The Sicilian General", or al-Saqlabi, "The Slav" or the slave; born in Sicily and died 28 April 992) was a Fatimid general 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. 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 (Arabic: الصقلبي, lit. The Slav or the slave), 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').