Barbara Ruth Mueller (September 10, 1925 – November 17, 2016)[1] was an American philatelist.
She also had served the United States Stamp Society, chairing a number of committees and contributing to, and editing, the society’s journal, The United States Specialist from 1972 through 1977.
At the National Postal Museum at the Smithsonian Institution in Washington, D.C., she worked on the files of former Post Office department executive Arthur M. Travers.
She has been named to the United States Stamp Society Hall of Fame and the APS Writers Unit 30 Hall of Fame, and she was invited to sign the Roll of Distinguished Philatelists in July 2009.
The Barbara R. Mueller Award for the best article published each year in the APS monthly journal American Philatelist, was established in 2007 by the United States Stamp Society in Mueller's honor.