The UNU-WIDER World Income Inequality Database (WIID) collects and stores information on income inequality for developed, developing, and transition countries.
International (159 countries)
Latest version - download from UNU-WIDER website
WIID 2.0c (2008) data - xls format
WIID 2.0c (2008) documentation - pdf format
WIID 2.0c (2008) documentation - pdf format
WIID 2.0c (2008) documentation - pdf format
WIID 2.0a - archived version (zip format).
WIID 1.0 - archived version (zip format).