Dan Attias, born December 4, 1951 in Los Angeles, California, USA, is a director and producer. He was an episodic director for the NBC drama Studio 60 on the Sunset Strip. He helmed the episode . He has worked on the HBO series The Wire, The Sopranos, Six Feet Under, Big Love, Treme, Entourage, Deadwood, and True Blood. He is an Executive Producer and director for the FX comedy series It's Always Sunny in Philadelphia. He was a regular director for the espionage drama Alias. He has also directed two episodes of Lost.