"The Enemy Inside" is the first single by American progressive metal band Dream Theater's eponymous 12th studio album.

[2] There is a music video for the song which shows a returning war veteran suffering from post-traumatic stress disorder.

It is notable as Dream Theater's first music video to not feature any of the band members.

On December 6, 2013, it was announced that "The Enemy Inside" was nominated for the "Best Metal Performance" Grammy Award,[3] coming in second to Black Sabbath's "God Is Dead?"

During filming the music video to "The Enemy Inside", Dream Theater were connected to Save A Warrior, an organization dedicated to embracing returning war veterans and offering safe, innovative evidence-based resiliency programs for soldiers suffering from post-traumatic stress disorder.