Mark Nottingham (b. November 30, 1971) is an influential web infrastructure developer who is one of the authors of the Atom (with Robert Sayre) and WS-I Basic Profile specifications, the author of RFC 4229: HTTP Header Registrations, and the chairman of the IETF HTTPBIS Working Group and W3C Web Services Addressing Working Group. He was an early advocate of web services, protocols that enabled software interoperability over the web.
Nottingham joined Yahoo in 2006, where he worked as a principal technologist—a position the company calls a "technical Yahoo" -- in the media infrastructure department. He previously worked for BEA Systems as a senior principal technologist and at Akamai Technologies as a research scientist. In 2011 he joined Rackspace as a Systems Architect, before returning to Akamai in September 2012. 
In 2002, Nottingham wrote "So You'd Like to Be a Standards Geek," a reading list on Amazon.com for people who aspire to create Internet protocols and formats. He included Machiavelli's The Prince among the books to read: "It's short, sweet (well, not really) and gets you in the proper frame of mind for doing battle, er, gathering consensus," he quipped.
Originally from Baltimore, Maryland, Nottingham graduated from Towson University with a bachelor of arts in photojournalistic studies, a self-designed major that included work in journalism, photography and graphic design.
- JavaWorld (2005-06-30). "Interoperability frustrations aired". Retrieved 2008-12-12.
- LinkedIn. "Mark Nottingham".
- Information Week (2004-10-08). "W3C Launches Web Services Addressing Working Group". Retrieved 2008-12-12.