Khasta Qasim (Persian: خسته قاسم, Azerbaijani: Xəstə Qasim: born 1684 — died 1760) – was an Iranian Azerbaijani poet of Azerbaijani literature. Khasta Qasim was one of the best Azerbaijani-language poets; he was also a mystic and philosopher in the era of the Afsharid dynasty (17th century) and popularly known as Dada and Gasim.
Khasta Gasim was born about 1680 in the village of Tikmedash, near Tabriz in one of the most educated families in Tabriz, which is evident from the preserved poetic heritage of the poet. In the 17th century, such forms of folk art, as ashug dastanskoe poetry and art were widely distributed not only in Tabriz, but also in the surrounding area. Since childhood, Gasim was interested in poetry. He learned Arabic and Persian languages and mastered new knowledge in the arts of poetry, philosophy, history, Islam, and astronomy. Gasim also deeply studied the literary heritage of Fuzuli, and thought of himself as his descendant.
Gasim mastered the experience of previous masters such as Dede Korkut, Shirvanly mall Gasim, Gharib, Gurbani Tufarganli Abbas, creating poetry, is taking part in polishing and improving the linguistic and stylistic means Dastan Keroglu. In connection with the invasion in 1734 the troops of Nadir Shah and the conquest of Tabriz, many poets and their families were evicted.
Khasta Gasim permanently settled in Shamakhi and thereafter holds in Shirvan. Also, for some time he lived at the court of one of the Shirvan Khanate - Garakhan. During a trip to Derbent, Dede Gasim met Ashug Lezgi Ahmed. It is well known among poets held a contest where both sides exchanged poems, riddles ("deyishme").