Some men were unhappy with women-only screenings held at the Alamo Drafthouse Cinema in Austin, with some opponents of the gender-restricted screening stating on platforms such as Facebook that such screenings were discriminatory against men. A gay Albany Law School professor initiated a complaint with Austin's Equal Employment and Fair Housing Office claiming discrimination against male prospective customers and employees of the theater. The chain responded with an online statement saying the event "may have created confusion—we want everybody to see this film" and announced a similar event at their Brooklyn location. Tickets sold out in less than an hour, prompting the chain to schedule additional screenings. On July 18, Alamo Drafthouse proposed settlement offers of a Wonder Woman DVD to the complainants, stating "Respondent did not realize that advertising a 'women's only' screening was a violation of discrimination laws."
In May 2017, early tracking had Wonder Woman opening with $65–75 million, and possibly as high as $105 million. The film opened Friday, June 2, 2017, across 4,165 theaters and made $38.7 million on its opening day, including $3.7 million in IMAX. It was the biggest single-day gross for a woman-directed film, ahead of the $35.9 million opening Friday of Catherine Hardwicke's Twilight in 2008 and the biggest opening day for a woman-led comic book superhero film, ahead of Ghost in the Shell ($7 million). This included $11 million it made from Thursday previews, also the best start for a film directed by a woman, surpassing Fifty Shades of Grey's $8.6 million which was directed by Sam Taylor-Johnson, and the third-biggest of the year, behind Beauty and the Beast and Guardians of the Galaxy Vol. 2. Of that, $1.5 million came from IMAX screenings.