Halil Akkaş (born 1 July 1983 in Kütahya) is a Turkish middle distance runner. He studied at Dumlupınar University.
He won the 3000 m steeplechase at the 2005 World Student Games
He finished fourth in the 5000 m final at the 2006 European Athletics Championships in Gothenburg. At the 2007 European Athletics Indoor Championships he competed in 3000 m and finished fourth. He also finished fourth in the 1500 m final at the 2006 IAAF World Indoor Championships in Moscow and sixth in the 3000 m steeplechase at the 2007 IAAF World Championships in Osaka
He is a member of the Fenerbahçe S.K. athletics club in Turkey.