Nightmare Anatomy is the second studio album by American band Aiden. It was released on October 4, 2005 through Victory Records. It peaked at number 196 on the Billboard200, number 9 on the BillboardHeatseekers Chart, and number 16 on the BillboardIndependent Albums Chart, and has since become one of the band's most commercially and critically successful albums to date. It was supported by three singles: "Knife Blood Nightmare", "The Last Sunrise", and "Die Romantic".
The Japan release also contains a bonus DVD with interviews, music video, and other material.