Jaafar Modarres-Sadeghi (Persian: جعفر مدرس صادقی; born May 19, 1954) is an Iranian novelist and editor.
While he was studying in the College of Literature and Foreign Languages in Tehran, he began to work as a journalist in a few dailies and literary magazines, writing reports, reviews and weekly columns.
The publication of this first novel coincided with the outbreak of Iran–Iraq War and was neglected by audience and critics.
Modarres-Sadeghi's second novel, Gavkhooni (The River's End), published in 1983, was acclaimed as an avant-garde literary masterpiece a few years after its publication.
A movie based on the novel, directed by Behrooz Afkhami, and produced by Ali Moallem, was made in 2003.