The Psychotechnic League is a future history created by American science fiction writer Poul Anderson. The name "Psychotechnic League" was invented by Sandra Miesel during the early 1980s, to capitalize on Anderson's better-known Polesotechnic League future history. Anderson published 21 novels, novellas and short stories set in this future between 1949 and 1957, with a 22nd published in 1968.
Anderson did not write the stories in chronological order. He included a series timeline in the Winter 1955 issue of Startling Stories to accompany the novella "The Snows of Ganymede".
By the late 1950s, Anderson's political beliefs had altered to the extent that he was uncomfortable with the political philosophy implied by the series, and he abandoned it. In particular, he had reversed his earlier strong endorsement for the United Nations as the basis of a world government, an opinion which was the main plot element of several earlier stories in the series.