David Blass is an American production designer and art director.

For his work on the Justified television series, Blass was nominated for the 2012 Primetime Emmy Award for Outstanding Art Direction for a Single-Camera Series for the Justified television series, and also received nominations for the Primetime Emmy Award for Outstanding Production Design for a Narrative Contemporary Program (One Hour or More) for Justified in 2014 and again in 2015 for the Constantine television series. In 2015, he was nominated for the Art Directors Guild Award for Excellence in Production Design for an Hour Contemporary Television Series for Justified. He has twice been published with cover stories in Perspective Magazine, with an Oct/Nov 2009 article on his pre-visualization of the final shot for the ER television series, and February/March 2012 featuring an article on his production design of the Justified series. For his work accurately portraying the State of Kentucky on the Television program Justified, he was awarded the honour of "Kentucky Colonel in 2011 by Governor Steven Beshear.

He is a member of the Art Directors Guild and the Academy of Television Arts & Sciences.

Blass grew up in Ashland, Massachusetts and graduated from  Ashland High School, where he wrote and directed his first film, A SADD Story, for "Students Against Drunk Driving" – which won a Reader's Digest contest. He also played soccer and baseball while at Ashland High. His film achievement in high school led to him receiving a scholarship to attend Emerson College in Boston, where he majored in film production. He then moved to California and began working in the film and television industry – initially working under Roger Corman.

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