Aileen Lee is the founder and Managing Partner of Cowboy Ventures. See sector focus, stage focus and contact routes.
Aileen Lee is the founder and Managing Partner of Cowboy Ventures, a Palo Alto-based seed-stage fund she launched in 2012 after spending over a decade as a partner at Kleiner Perkins Caufield & Byers[1][2][6]. Her investment thesis targets early-stage enterprise and consumer startups in large, growing markets that re-imagine work and personal life, a focus she terms “Life 2.0,” with a portfolio split roughly 60% consumer and 40% enterprise[1][2][7]. Lee typically writes checks between $100,000 and $1 million, with a sweet spot of $500,000 to $800,000, and often leads rounds at the seed stage[4]. Notable portfolio companies include Dollar Shave Club, Guild Education, Brandless, and Philz Coffee[2][7][8]. She is best known for coining the term “unicorn” in a 2013 TechCrunch article to describe privately held startups valued over $1 billion, a concept that reshaped venture discourse[3][8]. Additionally, Lee co-founded the nonprofit All Raise to increase women’s representation in venture capital and frequently writes and speaks on founder support and diversity in tech[2][3].
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