Ibn Fadlan (Arabic: أحمد بن فضلان بن العباس بن راشد بن حماد Aḥmad ibn Faḍlān ibn al-ʿAbbās ibn Rāšid ibn Ḥammād, fl. 921–22) was a 10th-century Arab traveler, famous for his account of his travels as a member of an embassy of the Abbasid Caliph of Baghdad to the king of the Volga Bulgars, known as his ("account" or "journal") His account is most notable for providing a detailed description of the Volga Vikings, including an eyewitness account of a ship burial.
For a long time, only an incomplete version of the account was known, as transmitted in the geographical dictionary of Yāqūt (under the headings Atil, Bashgird, Bulghār, Khazar, Khwārizm, Rūs), published in 1823 by Christian Martin Frähn.
Only in 1923 was a manuscript discovered by Zeki Validi Togan in the Astane Quds Museum, Mashhad, Iran. The manuscript, Razawi Library MS 5229, dates from the 13th century (7th century Hijra) and consists of 420 pages (210 folia). Besides other geographical treatises, it contains a fuller version of Ibn Fadlan's text (pp. 390–420). Additional passages not preserved in MS 5229 are quoted in the work of the 16th century Persian geographer Amīn Rāzī called Haft Iqlīm ("Seven Climes").