Dangerous Visions is an anthology of science fiction short stories edited by American writer Harlan Ellison and illustrated by Leo and Diane Dillon.

Writer/editor Al Sarrantonio wrote that Dangerous Visions "almost single-handedly [...] changed the way readers thought about science fiction.

It was originally announced for publication in 1973, but other work demanded Ellison's attention and the anthology did not see print in his lifetime.

[8] British SF author Christopher Priest critiqued Ellison's editorial practices in a widely disseminated article titled "The Book on the Edge of Forever".

Ellison had a record of fulfilling obligations in other instances, including to writers whose stories he solicited, and expressed outrage at other editors who have displayed poor practices.