John C. Klensin is a political scientist and computer science professional who is active in Internet-related issues.

[2][3] His career includes 30 years as a principal research scientist at MIT, including a period as INFOODS Project Coordinator for the United Nations University, distinguished engineering fellow at MCI WorldCom, and Internet architecture vice president at AT&T; he is now an independent consultant.

As a part of this program, John Klensin led the development of the Consistent System[5][6][7] targeted for use by Social Scientists.

[8] In 1992, Randy Bush and John Klensin created the Network Startup Resource Center,[9] helping dozens of countries to establish connections with FidoNet, UseNet, and when possible Internet.

Klensin is the author or co-editor of 60 RFCs,[10] and has served as IETF Applications Area director 1993-1995,[11] Internet Architecture Board member 1996-2002, and its chair 2000-2002.