The Southern African Development Community (SADC) has 15 member states:
Angola
Botswana
Democratic Republic of the Congo – since 8 September 1997
Lesotho
Madagascar – membership reinstated on 30 January 2014[1]
Malawi
Mauritius – since 28 August 1995
Mozambique
Namibia – since 31 March 1990 (since independence)
Seychelles – also previously been a member of SADC from 8 September 1997 until 1 July 2004 then joined again in 2008.
South Africa – since 30 August 1994
Swaziland
Tanzania
Zambia
Zimbabwe
(Source: http://en.wikipedia.org/wiki/Southern_African_Development_Community)