Paradox was a science fiction fanzine published and edited by Frank Wilimczyk.
Paradox was published in the early 1940s. At least five issues were released. Issues 4 and 5 appeared in 1943
Contributors of art work included Jim Mooney, among others.
Contributions of writing included book reviews by Phil Bronson (Scienti-Comics, Peon), and "Behind the Planet Stories Pulp Editor Door", by Larry Shaw, then editor of the pulp magazine Planet Stories, and the fanzine Leprechaun.
Letters came from Art Widner, among others.