Abu al-Ula al-Wathiq Idris (Arabic: أبو العلا أبو الدبوس الواثق بالله إدريس بن محمد بن أبي عبد الله محمد بن أبي حفص بن عبد المؤمن; died 1269), known as Abu Dabbus, was an Almohad caliph who reigned in Marrakesh from 1266 until his death.
Marrakech had been besieged earlier by the Marinid sultan Abu Yusuf Yaqub ibn Abd Al-Haqq before 1266, although unsuccessfully. Idris took advantage of the confused situation to oust his cousin Abu Hafs Umar al-Murtada with Abu Yusuf's support, and to declare himself Almohad caliph, although his power barely extended outside the city. However, the Marinid ruler changed his mind eventually, spurring the Ziyyanid Abu Yahya Yaghmurasin ibn Zayyan to attack Marrakech. The siege lasted from 1268 until September 1269, when the city fell. Idris II was assassinated by a slave.
Idris' death marked the end of the Almohad caliphate.