MacKenzie Scott (née Tuttle, formerly Bezos; born April 7, 1970) is an American novelist, philanthropist, and ex-wife of Amazon founder Jeff Bezos. As of May 2025, she has a net worth of US$35.9 billion, according to Bloomberg Billionaires Index, owning a 4% stake in Amazon. As such, Scott is the third-wealthiest woman in the United States and the 38th-wealthiest person in the world. Scott was named one of Time's 100 most influential people in 2020 and one of the world's 100 most powerful women by Forbes in 2021 and 2023.
In 2006, Scott won an American Book Award for her 2005 debut novel, The Testing of Luther Albright. Her second novel, Traps, was published in 2013. She has been executive director of Bystander Revolution, an anti-bullying organization, since she founded it in 2014. She is committed to giving at least half of her wealth to charity as a signatory to the Giving Pledge. Scott made $5.8 billion in charitable gifts in 2020, one of the largest annual distributions by a private individual to working charities. She donated a further $2.7 billion in 2021. As of mid-December 2024, Scott had given a total of $19.3 billion to over 1600 charitable organizations.