Aiden is an emocore/post–hardcore band from Seattle, Washington that formed in the spring of 2003.

Their first full–length album, Our Gangâ??s Dark Oath, was released in June 2004 under Dead Teenager Records. Their second full length album, and debut for Victory Records, was released October 4 and is titled Nightmare Anatomy. The band were signed to Victory Records due to their associations with Stalins War and Silverstein who gave the groups demo and recomended them to the record executives.