Mathom was a science fiction fanzine published by the Houston Science Fiction Society.
Mathom was published in Houston, Texas, U.S.A., and was the official organ of the Houston Science Fiction Society, restablished by Joanne Burger (Pegasus, later editor of The National Fantasy Fan), H.H. Hollis, Joseph F. Pumilia, Lisa Tuttle, and Bill Wallace in 1969, of which Joanne Burger was the first President, and lasting until 1980.
Lisa Tuttle founded, edited and published the first few issues of the fanzine.
Issue 1 was published in February 1969, with issue 2 following in June, and issue 3 in October of the same year.
Issue 5 appeared in October 1970.
Letters came from Arthur C. Clarke (Novae Terrae), among others.