Karl Kielblock (23 October 1907 – 26 November 1991) was a South African writer.
In 1928 he was appointed a teacher at the Laerskool Hendrik Louw in Strand where he taught until 1967.
In 1970 he received the Academy's Scheepers Prize for youth literature [af] for his book Rebel.
Kielblock's suspense books consist of a series with the investigator Frans Lindenhof.
[1] His youth books also include a series with the character Lafras Cuyper.