Dennis Gassner (born 1948) is an American production designer. He is notable for his work in Bugsy, Road to Perdition, and Big Fish. He was the production designer for the 22nd and 23rd James Bond films: Quantum of Solace and Skyfall, which were released in 2008 and 2012. He has been nominated four times for the Academy Award for Best Production Design and has won once. The films for which he received nominations are:
Gassner was nominated for an Art Directors Guild Award for Excellence in Production Design for a Contemporary Film for his work on Quantum of Solace and won for his work on Skyfall.