Eric Hahn (born March 19, 1960) is an American serial entrepreneur and computer software programmer who founded an early e-mail-based groupware company called Collabra Software in 1992. Netscape acquired Collabra in 1995, and in 1997 Hahn became Netscape's CTO. According to SEC filings Hahn netted approximately $29 million from sales in Netscape stock.