Grimwab was a science fiction fanzine by Harry Bell.
This was Harry Bell's first fanzine, published in the 1960s and distributed by PADS in the UK. The first issue appeared with the fifth mailing of PADS in January 1966.
Contributions included "The Bristol Binge", a report on the 1967 Bristol Convention by Darroll Pardoe. Other contributions came from Archie Mercer, Ken McIntyre, and Chris Priest, with reprints of pieces by John Berry, and Vince Clarke (Science Fantasy News).
Five issues were released. The last issue, co-edited with Beryl Mercer, who was also a contributor, appeared March 1968.