Benjamin Abraham Horowitz (born June 13, 1966) is an American businessman, investor, blogger, and author.

He previously co-founded and served as president and chief executive officer of the enterprise software company Opsware, which Hewlett-Packard acquired in 2007.

[12] He took the first step by selling Loudcloud's core managed services business to Electronic Data Systems for $63.5 million in cash.

Andreessen Horowitz began with an initial capitalization of $300 million[17] and within three years had $2.7 billion under management across three funds.

[22] In July 2024, Horowitz announced he will donate to Super PACs that support Donald Trump's presidential campaign.

[19][23] In October, however, Horowitz announced that he and his wife will be making "significant" donations to groups that support Kamala Harris' campaign, citing their friendship dating back over 10 years.