Harf Akhar is an Iranian educational institute founded in 2011 and managed by استاد Abdulreza Montazeri. It provides video-based learning resources for students preparing for university entrance exams and for learners studying school subjects. Its courses cover the experimental sciences, humanities, and mathematics tracks, including biology, chemistry, physics, mathematics, Arabic, philosophy, psychology, history, and geography. The institute also offers materials for middle-school and elementary grades, as well as preparation for final examinations.

Harf Akhar’s teaching approach emphasizes visual explanations, animations, and distinctive problem-solving patterns intended to make difficult concepts easier to understand and remember. Courses are delivered through a video-on-demand platform, allowing students to access lessons at different times. The Harf Akhar TV app uses artificial intelligence to monitor study behavior and provide specialized study planning. Other offerings include practice exams, downloadable books, and free introductory courses; the institute says 20 percent of its educational resources are available free through its “Zero to Rank” program for exam candidates.