'Səğadət İsxaqi / İsxaqova'; 27 July 1907 – 24 June 1989) was a Turkish turkologist, professor and writer of Tatar descent.

Her father Ayaz divorced her mother Meryem (Məryəm) in 1908, and she spent her childhood mostly with her grandfather Ğiləcetdin xəzrət.

They were able to arrange her to Finland, though in there, Çağatay was put in a month long quarantine due to an ongoing pandemic in where she came from.

With the help of politician Hamdullah Suphi Tanrıöver, she became a citizen of Turkey in 1925, and the summer of next year she spent with her father in the country.

[2] In 1935, the Polish Academy of Sciences published work by Çağatay in Krakow, named Çora Batır.

During these times, she finished her work ltun Yaruktan İki Parça and also helped translate texts of German turkologists.

[2] Çağatay, with her husband and father established a foundation in 1988, called Ayaz Tahir Türkistan İdil-Ural Vakfı.