Ahmad Yasawi (, ; ; 1093–1166) was a Turkic poet and Sufi, an early mystic who exerted a powerful influence on the development of Sufi orders throughout the Turkic-speaking world. Yasawi is the earliest known Turkic poet who composed poetry in Middle Turkic. He was a pioneer of popular mysticism, founded the first Turkic Sufi order, the ''Yasawiyya'' or ''Yeseviye'', which very quickly spread over Turkic-speaking areas. He was a Hanafi scholar like his ''murshid'' (spiritual guide), Yusuf Hamadani.
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