Temper! is a science fiction fanzine edited by Judy Zissman, later known as Judith Merril.
Subtitled "The Family Magazine", the first issue ofTemper! was published by Parallax in May 1945, in New York, U.S.A. it is also subtitled "Teapotemper". Issue 2 was released in 1946, and was subtitled "Temperament". Issue three came out in 1947, and was subtitled "Temporary". Issue 4 was also released in 1947, and was subtitled "Distemper".
Damon Knight's contribution for issue 1 is entitled "On Hood River, Oregon", in which he mockingly describes the residents of his home town as illiterate ultra-conservative hillbillies. There is also a discussion of the Vanguard Prospectus.
In the same year, Judy Zissman and Dan Zissman, in collaboration with Larry Shaw, also published the fanzine Science*Fiction.