The Age of Adz ( AHDZ) is the sixth studio album by American singer/songwriter Sufjan Stevens, released on October 12, 2010, by Asthmatic Kitty. It was Stevens' first song-based full-length album in five years, since the release of Illinois in 2005.

The album features heavy use of electronics augmented by orchestration and takes inspiration from the apocalyptic artwork of schizophrenic artist Royal Robertson. Stevens' use of electronics marked a radical departure from much of his previous work—most notably from Seven Swans and Michigan. Stevens had previously explored electronics on his album Enjoy Your Rabbit. Unlike Illinois, the lyrics do not explore events, characters or setting, but deal instead with themes and emotions on a personal level.

Critics praised the intimacy of the album, but many were divided over the change in style that Stevens had taken. Nonetheless, it appeared on several "best of 2010" lists—including those of Paste, The New York Times and MTV. Commercially, the album gave Stevens his career's best first-week sales to date and was his highest-charting album to date, peaking at number seven on the Billboard 200.