Wonder Woman is a superhero who is a part of the DC Comics universe. She is an Amazon from the island of Themyscira, and her official title is Princess Diana of Themyscira, Daughter of Hippolyta. After leaving the island, she goes by Diana Prince.

She was created from clay by her mother Queen Hippolyta and was given life by the gods. She was also given superhuman powers. She carries the Lasso of Truth and a pair of bracelets that are indestructible and can deflect bullets.

Wonder woman from recent comics holding a shield and looking confidently ahead during a battle.
Image/DC Comics

She grew up on the island of Themyscira, a utopian place inhabited only by women. Steve Trevor, an American soldier, crashes his plane, and Diana is chosen to return him to "Man's World" and fight the axis powers.

There had been a lot of speculation about Wonder Woman's sexuality. The fact that she grew up in a society of women would suggest that same-sex relationships were common and probably something that she had engaged in. Many people who have worked on Wonder Woman have pointed out that "gay" or "bi" as we think of it would be irrelevant because on an island of all women, it would be assumed that everyone is in same-sex relationships.

Additionally, the creator of Wonder Woman, William Moulton Marston, was certainly aware of bisexuality as he was in a long-term relationship with three women, at least two of whom were bi.

In a 2016 interview with Comicosity, Wonder Woman writer Greg Rucka was explicit about Diana's attractions to men and women.[1]

Now, are we saying Diana has been in love and had relationships with other women? As Nicola and I approach it, the answer is obviously yes.
And it needs to be yes for a number of reasons. But perhaps foremost among them is, if no, then she leaves paradise only because of a potential romantic relationship with Steve [Trevor]. And that diminishes her character. It would hurt the character and take away her heroism.
When we talk about agency of characters in 2016, Diana deciding to leave her home forever — which is what she believes she’s doing — if she does that because she’s fallen for a guy, I believe that diminishes her heroism.
She doesn’t leave because of Steve. She leaves because she wants to see the world and somebody must go and do this thing. And she has resolved it must be her to make this sacrifice.

Recently Wonder Woman, played by Gal Gadot, has been featured in her own film franchise and in the Justice League films. The first Wonder Woman movie certainly implied that she has had relationships with women. Gal Gadot has also talked about Wonder Woman's bisexuality.

In this movie she does not experience any bisexual relationships. But it’s not about that. She’s a woman who loves people for who they are. She can be bisexual. She loves people for their hearts.[2]

The second Wonder Woman movie starring Gal Gadot was released in December 2020 and further develops her relationship with Trevor.