The Emir Abdelkader Mosque () is a Sunni mosque located in the city of Constantine, in the Constantine Province of Algeria. It is the second largest mosque in Algeria after Djamaa Al Djazair.
Completed in 1994, the mosque was named in honour of Al Amir Abdelkader Ibn Mahyeddine, an Algerian Sufi scholar, religious, and military leader who led a struggle against the French colonial invasion of Algiers in the early 19th century. The establishment of the mosque, along with the Emir Abdelkader University, led to an increase in the number of specialists in Islamic architecture in Constantine. The university and mosque were built with marble and granite. It has two minarets that are high and a dome that is in diameter.