Mehdi Azar-Yazdi (Persian: مهدی آذریزدی) (18 March 1922 – 9 July 2009) was an Iranian children's writer.

His books are adaptations of works of the Classical Persian literature re-written for children in an easy-to-understand style.

Azar-Yazdi's most famous work was Good Stories for Good Children (قصه‌های خوب برای بچه‌های خوب) written in eight volumes based on several works of Persian literature, including Kalila wa Dimna, Gulistan, Masnavi-e Ma'navi, Marzban-Nameh, Sinbad-Nameh, Qabus-Nameh, Maqalat of Shams Tabrizi, Jami'-ul-Hikayat, Siyasat-Nameh, and some stories from the Quran and the life of Muhammad and The Fourteen Infallibles.

While a teenager, he spent his time reading books, including Quran, Mafatih-ul-Jinan, Masnavi, Saadi Shirazi's works, and Divan of Hafez.

Azar Yazdi worked as a construction worker and a simple laborer in sock-weaving workshops, publishing houses and bookshops.

I had no one encouraging me [when I was young], and my parents taunted me about writing childlike stories," Azar Yazdi once said during a ceremony was held by the Iranian Luminaries Association to honor him in February 2007.

Azar Yazdi died in 2009 after a period of disease in Tehran Atiyeh hospital[9] and his body is buried in his hometown, Yazd.