Dustin Aaron Moskovitz[1] (/ˈmɒskəvɪts/; born May 22, 1984)[2] is an American billionaire internet entrepreneur who co-founded Facebook, Inc. (now known as Meta Platforms) with Mark Zuckerberg, Eduardo Saverin, Andrew McCollum and Chris Hughes.

[9][10] Moskovitz attended Harvard University as an economics major for two years before he moved with Mark Zuckerberg to Palo Alto, California, in order to work full-time on Facebook.

[11] Four people, three of whom were roommates—Mark Zuckerberg, Eduardo Saverin, Chris Hughes, and Dustin Moskovitz—founded Facebook in their Harvard University dorm room in February 2004.

[3][13] In June 2004, Zuckerberg, Hughes and Moskovitz took a year off from Harvard and moved Facebook's base of operations to Palo Alto, and hired eight employees.

[21] The collaboration with GiveWell led to a spinoff called the Open Philanthropy Project, whose goal is to figure out the best possible way to use large sums of money (starting with Moskovitz's multi-billion-dollar fortune) to do the best.

[26] In 2023, Moskovitz through Open Philanthropy donated $900,000 to scientists in Africa, Asia, and South America to further study the impacts of climate change.

[34] The New York Times quoted Moskovitz's blog post on the subject: "The Republican Party, and Donald Trump in particular, is running on a zero-sum vision, stressing a false contest between their constituency and the rest of the world.

Moskovitz was also the biggest angel investor in the mobile photo-sharing site Path, run by another former member of Facebook, David Morin.

It was reported[39] that Moskovitz's advice was important in persuading Morin to reject a $100 million offer for the company from Google, made in February 2011.