Robert Sayre (born 1978) is a software developer who wrote the Atom syndication specification along with Mark Nottingham. Sayre joined Mozilla in 2006, where he worked until 31 May 2011 as an engineering director. He previously worked for the digital marketing agency IconNicholson as a software engineer.
Sayre was a speaker at the IETF annual meeting in 2007, the Google Test Automation Conference in 2007 and XTech 2006 in Paris. He wrote "Atom: The Standard in Syndication," an article published in the July/August 2005 issue of the journal IEEE Internet Computing, and is a former developer of a Mac client for the Soulseek file-sharing service.