Joseph or Joe Barr may refer to:
Joseph M. Barr (1906–1982), Mayor of Pittsburgh Joseph W. Barr (1918–1996), U.S. Secretary of the Treasury Joe Barr (1944–2008), American editor and writer for the SourceForge sites, Linux.com, and the IT Managers Journal Joe Barr (footballer) (1868–1894), Scottish soccer player Joe Barr (born 1959), Northern Irish cyclist