A Black Box is the ninth studio album by Peter Hammill, released on S-Type Records in August 1980.

Hammill performed nearly all the instrumentation himself, including the drum parts, a task he had first undertaken on his previous album pH7.

His ex-Van der Graaf Generator colleague David Jackson also made a guest appearance, along with David Ferguson of the new-wave band Random Hold, whose debut album Hammill had produced.

The short-lived S-Type label (the name was a pun on "stereo-type"), on which the album was originally released, was set up by Hammill and his then manager Gail Colson.

The S-Type label does not appear to have been a successful business project, and the album was later licensed to Virgin Records, who have since also acquired Hammill's Charisma catalogue.