'Abd al-Qadir ibn 'Umar al-Baghdadi (Arabic: عبد القادر بن عمر البغدادي; 1030–1093 AH / 1620–1682 AD) was an author, philologist, grammarian, magistrate, bibliophile and a leading literary encyclopedist of the Ottoman era.
His most prominent professors were Yassin Al-Homsi and Shahab ad-dīn Al-Khafaji, author of Rīhāna Al-Albā (ريحانة الألبا وزهرة الحياة الدنيا) and Shefa Al-Ghalīl (شفاء الغليل).
In Edirne, Abd al-Qadir met Ibn Fadlallāh al-Mahabī, author of the Khlāsat al-'Athr (خلاصة الأثر في أعيان القرن الحادي عشر) – 'Concise Traditions of the Eminent of the 11th-century' – who was a friend of his father's.
His methodology of transmission takes the classical form, known as isnād, as a way of explaining and controlling his narration by citing an unbroken chain of witness testimony.
He memorized the al-dawawin (collected poems) of Maqamat Badi' az-Zaman al-Hamadhani and Maqama of Al-Hariri and the histories of the Arabs, the Persians and the Turks.