17 X Infinity is an American anthology of science fiction short stories edited by Groff Conklin.

It was first published in paperback by Dell in August 1963 and reprinted in April 1969.

[1] The book collects seventeen novelettes and short stories, plus one poem, by various authors, together with an introduction by the editor.

The stories were previously published from 1909-1962 in various science fiction and other magazines.

This article about a collection of science fiction short stories published in the 1960s is a stub.