Laura Arrillaga-Andreessen (born 1969/1970) is an American^[2] educator^[3] and author.^[4]

She is the founder and president of the Laura Arrillaga-Andreessen Foundation, a private operating foundation that describes itself as a philanthropic "innovation lab",^[5] and founded the Silicon Valley Social Venture Fund (SV2), a venture philanthropy fund.^[6] She is also the author of Giving 2.0: Transform Your Giving and Our World.

Arrillaga-Andreessen was born in Palo Alto, California, the daughter of Frances C. Arrillaga and billionaire real estate developer John Arrillaga, Sr.^[4] She received a BA (1992) and MA (1999) in Art History from Stanford University, an MA (1998) in Education from Stanford School of Education, and an MBA (1997) from the Stanford Graduate School of Business.^[7][8]

While attending the Stanford Graduate School of Business, Arrillaga-Andreessen developed a business plan for an organization to teach philanthropy and make grants based on venture capital firm investment strategies.^[4] The organization became the Silicon Valley Social Venture Fund (SV2), which Arrillaga-Andreessen founded in 1998 and served as its chairman until 2008; she is currently its chairman emeritus.^[4][6][9]

In 2006, she founded and serves as board chairman of Stanford PACS (Center on Philanthropy and Civil Society), a social change research center. ^[6] She has been an Instructor at the Stanford Graduate School of Business since 2000 and teaches courses on philanthropy and on leadership.^[8]

In 2011, Arrillaga-Andreessen's book Giving 2.0: Transform Your Giving and Our World was published by Jossey-Bass,^[10][6] and she writes about philanthropy for The Huffington Post and other publications.^[8]

In 2015, Arrillaga-Andreesen penned a story for T, the style magazine of the New York times, which hyped various companies including AirBNB and Theranos, the now-disgraced healthcare startup. Arrillaga-Andreesen failed to disclose in the article that her husband, Marc Andreesen, was a major investor in both of those companies, resulting in the Times decision to make a rare admission that the article was a clear conflict of interest. ^[11]

Arrillaga-Andreessen has said her mother's volunteer work was a strong influence on her when she was growing up in Palo Alto.^[12] She became active in philanthropy after her mother's early death from cancer.^[4][13] Arrillaga-Andreessen married Marc Andreessen in 2006.^[14] The couple have one son. Arrillaga-Andreessen and her husband co-founded the Marc and Laura Andreessen Foundation. Arrillaga-Andreessen is the Foundation's president.

In 2022, Arrillaga-Andreessen and her husband advocated against the construction of 131 multifamily housing units in their affluent town, Atherton, California.^[15]

In 2001, Arrillaga-Andreessen received the Jacqueline Kennedy Award for Women in Leadership and in April 2005 became a Henry Crown Fellow of the Aspen Institute.^[8] She was awarded the President's Volunteer Service Award from the Points of Light Foundation in June 2005 and Silicon Valley Children and Family Services' Outstanding Philanthropist Award in 2009.^[8] In 2011, she and Marc Andreessen received Global Citizen Awards from the Global Philanthropy Forum of the World Affairs Councils of America.^[8]