Mirza Mohammad Reza Kalhor

Mirza Reza Kalhor (; – 1892) was a 19th-century Iranian calligrapher, known for his mastery of the Nastaʿlīq script technique.

A member of the Kurdish Kalhor tribe of Kermanshah, he initially followed the typical tribal path, learning horsemanship and sharpshooting. He gained an interest in calligraphy as a child, and left the tribe for further training. He also devised methods for teaching Nastaʿlīq and specified clear proportional rules for it, which many could follow.

He died of cholera in Tehran at age 65, having sired nine children and taught many calligraphy students, several of whom went on to become notable in their own right. He was buried in Ḥasanābād cemetery.