Dr. Adder is a dark science fiction novel by American writer K. W. Jeter, set in a future where the United States has largely broken down into reluctantly cooperating enclaves run by a wide variety of strongmen and warlords, with a veneer of government control that seems largely interested in controlling technology.

The novel anticipates various cyberpunk ideas that would be established by the Sprawl trilogy written by William Gibson, as well as other works of that science fiction genre.

[1][2] "Its impact on the field would have been enormous" according to Philip K. Dick, if the novel wasn´t delayed due to the extreme violence and graphic sex.

[4] KCID is an old man living in Rattown, a future L.A. slum; he has a small portable transmitter, which turns him into a mobile radio station.

He told me when he had enough data worked into the system he could predict any series of events connected to Adder, a few minutes before each event actually occurred..."[1]: 131  This is a hint at I Ching, the Chinese oracular book Dick used to compose his 1962 novel The Man in the High Castle, but also a popular reading in the counter-cultural 1960s.

At the end of the novel KCID puts the microphone in front of the protagonist, Dr. Adder, so that he may speak to his "old fans, and everyone else, who never worshipped [him]".