Panther Books Ltd was a British publishing house especially active in the 1950's and 1960's, specialising in paperback fiction.
By 1968, Granada Group Ltd had acquired a number of publishers who became subsidiary companies of Granada Publishing Ltd. These included, amongst others, Panther Books Ltd, and thus Panther Science Fiction became a Granada imprint.
In 1983, Granada sold the publishing side of its business to the Scottish publishers William Collins, Sons & Co, based in Glasgow.
In 1989, William Collins Sons & Co merged with the American Harper & Row publishers.