#AppleToo was a movement at Apple Inc. that started in August 2021 during a period of employee unrest centered primarily on the maltreatment of women at the company. Since the early 1990s, Apple has been criticized over a lack of women in leadership. In 2016, employees made anonymous allegations of sexual harassment and sexual assault, discrimination, and mismanagement of concerns by human resources at Apple. In 2021 and 2022, women at the company began speaking on the record to the press and on social media. After an employee-run wage survey found a 6-percent gender-based wage gap, employees began sharing personal stories under the hashtag #AppleToo, inspired by the #MeToo movement, which in turn spawned other corporate movements, such as #GeToo at General Electric.

Several legal actions were taken due to Apple's response to the employee activism. On June 13, 2024, a lawsuit seeking class status was filed in California. In October 2024, the National Labor Relations Board's prosecuting attorney filed charges against Apple for unlawful rules, shutting down discussions of gender-based pay equity, and for illegally firing Cher Scarlett, a co-leader of #AppleToo.

In early 2016, a pay study at Apple found gender-based and racial-based wage gaps. That August, Apple said they achieved equal pay for all US-based employees. At the same time, reports showed that Apple was over-represented by white men, especially in technical and leadership positions. A month later, Mic published emails from two anonymous women that the publication said revealed a toxic work environment for women involving sexual harassment, rape jokes, and discrimination. Other anonymous employees spoke out with similar concerns, alleging that the human resources (HR) department was corrupt and had a practice of retaliating against employees who make reports of misconduct.

In May 2021, women at Apple began speaking out against the company on the record for the first time through the press and on the social media site Twitter. After the hiring of Antonio García Martínez, the author of Chaos Monkeys (2016), thousands of employees questioned his hiring in an open letter to Eddy Cue. In the book, García Martínez wrote that women in the San Francisco bay area were "soft and weak" and "useless baggage you'd trade for a box of shotgun shells or a jerry can of diesel." The letter was leaked to The Verge, and resulted in the departure of García Martínez shortly afterward. Other open letters followed including asking leadership for public support of Palestine during the 2021 Israel–Palestine crisis, long-term remote work during the COVID-19 pandemic, and public denouncing of anti-abortion laws amidst Dobbs v. Jackson Women's Health Organization.

In August 2021, one of the authors of the open letter about García Martínez, security engineer Cher Scarlett, started a wage transparency survey after other employees were told such surveys were prohibited, which labor lawyers said was illegal. Analysis of the preliminary results showed a 6% wage disparity between men and women. The survey also showed that white men had an outsized share of leadership and technical roles. She tweeted charts shared by The Verge she said were "alarming" that showed Apple's own demographic statistics were misleading; hiding that racial demographics among women were more balanced than men, and that women of color were most likely to be working in non-leadership roles in support, marketing, and retail. As a result of this, Scarlett was harassed, doxed, and stated that co-workers told her that their managers told them not to engage with her.

In September 1991, Macworld reported employee criticism of Apple's failure to promote women as often as men on a tool called AppleLink. At the time, the company only had four women in department leadership roles, of which there are about 100. In 2014, a developer found only two women in 16 hours of WWDC footage since 2007. The following year, Quartz reported only one woman took the stage at any Apple event between 2013 and 2015, including Apple's annual Worldwide Developers Conference (WWDC) keynote, which prompted questions about the lack of gender diversity at Apple. MIC reported in 2017 women accounted for only 7% of stage time at the WWDC keynote, nine minutes out of two hours. Apple shareholders demanded Apple add more women and minorities to leadership and Vox reported only 29% of all leadership were women. The following September, at the iPhone X announcement, only one woman took the stage to account for six minutes of the two-hour event.

In 2020, the virtual WWDC keynote included rank-and-file employees, which included 11 women and 8 men. On International Women's Day in 2022, a video Apple event promoting Apple M1 featured women developers at the company was criticized by current and former employees. They said it misrepresented the company's gender diversity and response to sexism. Scarlett tweeted that the 2021 wage survey found that less than 10% of Apple's female workforce were in technical roles in software or hardware. Lauren Goode, a female tech reporter, said in a Wired podcast that the change to a virtual event hid the lack of diversity at WWDC. Commenting on the reality behind a joke about there being no lines at the women's restrooms in tech she said, "There's very rarely a line for the women's restroom because there are so few women at this conference."

In September 2022, Computerworld reported just two of Apple's 12 most senior executives were women. Two months later, CEO Tim Cook told the BBC there were not enough women in tech, including at Apple, and there was "no good excuse" for it.