Jessica Campbell Jones Cage is a fictional character appearing in comic books published by Marvel Comics. Created by writer Brian Michael Bendis and artist Michael Gaydos, Jones first appeared in Alias #1 as a former super heroine who became the owner and sole employee of Alias Private Investigations. She has since starred in two ongoing series (Alias and The Pulse), and became a member of the New Avengers alongside her husband Luke Cageduring Marvel Comics’ Heroic Age. At various points in her history, Jones has used the aliases Jewel, Knightress and Power Woman.

Krysten Ritter plays the character in Jessica Jones, a live-action television series set in the Marvel Cinematic Universe which is set to premiere on Netflix in 2015.