Gwendolyne Maxine "Gwen" Stacy is a fictional character appearing in American comic books published by Marvel Comics, usually as a supporting character in those featuring Spider-Man. A college student and the daughter of George and Helen Stacy, she is the first romantic interest for Peter following his high school graduation before she is murdered by the Green Goblin (Norman Osborn). Her death has haunted Peter ever since, and stories published long afterwards indicate she still holds a special place in his heart. Gwen is posthumously subjected to numerous cloning experiments by her former professor Miles Warren, Peter's clone Ben Reilly, and an A.I. of Harry Osborn, the latter resulting in the creation of the Kindreds, and Ben briefly resurrecting Gwen in Dead No More: The Clone Conspiracy (2016–2017), with the embodiment of Death herself confirming in Ben Reilly: The Scarlet Spider (2017–2018) that all clones Ben created of deceased people had their souls intact on being brought back, while clones of living people (like Ben himself) had unique souls of their own. In the alternate realities of Ultimate Marvel and Spider-Gwen, a still-living Gwen respectively becomes their universe's versions of Carnage and Spider-Woman.
The character was portrayed by Bryce Dallas Howard in Spider-Man 3 (2007) and by Emma Stone in The Amazing Spider-Man film series (2012–2014) and Spider-Man: Across the Spider-Verse (2023; archive footage). A multiverse Spider-Gwen is voiced by Hailee Steinfeld in the 2018 animated film Spider-Man: Into the Spider-Verse and its sequel Spider-Man: Across the Spider-Verse (2023), and will reprise the role in Spider-Man: Beyond the Spider-Verse (2024) and Spider-Woman (TBA).
Created by writer Stan Lee and artist Steve Ditko, Gwen Stacy first appeared in The Amazing Spider-Man #31 (December 1965). Stan Lee claimed that his wife, Joan, was the inspiration for Gwen.
In her initial appearances, Peter Parker meets Gwen while both are studying as undergraduates at Empire State University, but with Aunt May in the hospital, Peter is troubled and ignores her advances.