Rot was a science fiction fanzine by Mal Ashworth (d. 2002).
Rot was distributed through the Offtrails Magazine Publishers Association in the 1950s and 1960s. The first issue appeared in 1955. Issue 4 was released in 1960, and issue 5 in 1963, which was the last until being briefly revived in 1984.
Writing in Skyrack, Ron Bennett reviews Rot, and says, "...this magazine is chockful of examples of the famous Ashworth humour, and I have to confess, is extremely hard to review in detail, except to say, perhaps, that this is a commentary on life as seen through the Ashworth eyes."