Reda Benhadj Djillali (; born 31 May 1978) is an Algerian football player. He currently plays for Algerian Ligue Professionnelle 1 club CS Constantine.
On 10 September 2011 Benhadj Djillali made his debut for CS Constantine as a 73rd-minute substitute in the opening round of the 2011âÂÂ12 Algerian Ligue Professionnelle 1 against JSM Béjaïa. A week later, he scored his first goal for the club in a 3âÂÂ1 loss to ASO Chlef.
On 3 January 2012 Benhadj Djillali was loaned out to Saudi Arabian club Najran SC until the end of the season.