Seyyed Ahmad Hatef Esfahani (Persian: سید احمد هاتف اصفهانی) (also spelled as Hatif Isfahani) is a famous Iranian poet of the 18th century.
Hatef Esfahani was born in Isfahan (Esfahan), a central province of Iran, and most likely he died there in 1783. (Some documents also indicate that he died in 1777). Hatef's date of birth is unknown. He was contemporary to at least seven rulers of Iran, namely Shah Rukh of Persia (ruled 1748–1796), Karim Khan Zand (r. 1760–1779), Abolfath Khan, Mohammad Ali Khan, Sadiq Khan Zand, and Ali Murad Khan (all from Zand dynasty who ruled 1779–1785), and Agha Mohammad Khan, the founder of Qajar dynasty (r. 1781–1797). He studied mathematics, medicine, philosophy, literature, and foreign languages (Turkish and Arabic). He had a son and a daughter. His daughter, named Beygom, married poet Mirza Ali Akbar Naziri.
Hatef was an expert in the composition of ghazals (odes). A ghazal is a poem of complex structure and exalted by lyrical or rhapsodic mood on some stated theme. Another line of his profession was in the writing of tarji'-band poems. When the linking verse is recurrent, the poem is called a tarji'-band (literally: return-tie). But when the linking verse is varied, the poem is called a tarkib-band (literally: Composite-Tie). He was also skilful in the composition of qasidas, elegies (sugnameh), rubaiyat (quatrains) and fragments (qita'at). But his reputation lay in his excellent poems of a mystical nature.