| Abu Zayd Abd al-Rahman Mohammed al-Jadiri | |
| Native Name: | عبد الرحمن الجدري |
| Native Name Lang: | ar |
| Birth Date: | 1375 |
| Birth Place: | Meknes, Morocco |
| Death Date: | 1416 |
| Death Place: | Fez |
| Era: | Islamic Golden Age |
| Main Interests: | Astronomer, |
| Major Works: | , |
Abu Zayd Abd al-Rahman Mohammed al-Jadiri (born in Meknes, in 1375 and died in Fez, probably in 1416) was the (time-keeper) at the Qarawiyyin Mosque.
He wrote a treatise on the determination of time of day and night, an (verse composition) in 26 chapters and 335 verses, entitled (1391/2), and a calendar adapted to the latitude of Fez, .[1]