Mirali Seyidali oglu Qashqai (Azerbaijani: Mirəli Seyidəli oğlu Qaşqay; January 20, 1907 – April 23, 1977), was an eminent Azerbaijani and Soviet geologist, author of multitude works in the sphere of geomorphology and stratigraphy.

He was one of the founders of scientific school in the sphere geologo-mineralogical sciences and he was the supervisor of geochemistry and mineralogy of ore departments of Geology Institute of the National Academy of Sciences of Azerbaijan.

Most important works of Mir Ali Gashgai were dedicated to petrology and mineralogy of Azerbaijan.

[1] Together with S. Aliyev, he compiled the geothermic map of Azerbaijan and proposed the theory of volcanic origin of Caucasian pyrite and chalcopyrite instead of the intrusive one.

[1] Following the landfall of Yardymly meteorite in 1959 he led the examination of its chemical and physical properties.