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 for a 6th issue.
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."