| al-Wathiq I الواثق الأول | |
|---|---|
| 4th Caliph of Cairo | |
| Reign | February 1340 – 16 June 1341 |
| Predecessor | al-Mustakfi I |
| Successor | al-Hakim II |
| Born | 1390 Cairo, Mamluk Sultanate now Egypt |
| Died | after 1341 (51 years) Cairo, Mamluk Sultanate now Egypt |
| Issue | |
| Father | Aḥmad ibn Aḥmad al-Ḥākim bi-amr Allāh, son of al-Hakim I |
| Religion | Sunni Islam |
Al-Wathiq I (Arabic: أبو إسحاق إبراهيم الواثق, Abū Isḥāq Ibrāhīm al-Wāṯiq; died after 1341) was the fourth Abbasid caliph seated in Cairo under the Mamluk Sultanate between 1340 and 1341.