The oud (Arabic: عود, romanized: ʿūd, pronounced [ʕuːd]; Somali: kaban or cuud) is a short-neck lute-type, pear-shaped, fretless stringed instrument (a chordophone in the Hornbostel–Sachs classification of instruments), usually with 11 strings grouped in six courses, but some models have five or seven courses, with 10 or 13 strings respectively.
The oud is very similar to other types of lute, and to Western lutes. Similar instruments have been used in the Middle East, North Africa (particularly the Maghreb, Egypt and Somalia), and Central Asia for thousands of years, including Mesopotamia, Egypt, the Caucasus, the Levant, anatolian Greeks, Albania and Bulgaria; there may even be prehistoric antecedents of the lute. The oud, as a fundamental difference with the western lute, has no frets and a smaller neck. It is the direct successor of the Persian Barbat lute.