Ghasem Dehnavi (born March 21, 1981, in Mashhad, Iran) is a retired Iranian football player. He usually played as a defensive midfielder.
Dehnavi joined Mes Kerman in 2009 from Mes Rafsanjan. After spending three seasons at Mes, he moved to Tractor Sazi. He signed a two-years contract with Persepolis on 3 July 2013 and is used as a defensive midfielder. In June 2014, after only one season with Persepolis in which he made only fifteen league appearances, Dehnavi signed with Zob Ahan. On 23 July 2015, he joined Saba Qom on a one-year contract.
He made his debut against Mauritania in April 2012 under Carlos Queiroz.