Sibawayh (Sibuyeh in Persian, سيبويه Sîbawayh in Arabic, سیبویه) was a linguist of Persian origin born ca. 760 AD in the town of Bayza (ancient Nesayak) in the Fars province of Iran. He was one of the earliest and greatest grammarians of the Arabic language, and his phonetic description of Arabic is one of the most precise ever made, leading some to compare him with Panini. The name Sibawayh is derived from the Persian words سیب-بو-یه Sib-bu-yeh meaning "the one with an apple's scent". Sibawayh died in Shiraz (also in the Fars province of Iran) around 793 AD.

See also: Arabic grammar.