Alex O'Brien (born (1970-03-07)March 7, 1970) is an American former doubles world No.

He also played on the United States Davis Cup team, competed in the 2000 Sydney Olympics, and was a four-time All-American at Stanford University, where he won NCAA singles, doubles, and team titles in 1992.

He earned a bachelor's degree in American Studies at Stanford in 1992.

[citation needed] On leaving his tennis career O'Brien founded an online business which markets, and distributes steaks.

The O'Brien family has been in the beef business for 60 years basing their production out of the LIT Ranch.