The Regional Tourism Organisation of Southern Africa (RETOSA) is a SADC body responsible for the development of tourism through marketing and promotion of sustainable regional tourism in SADC member countries. The organization aims to work closely with member states, institutions and societies to ascertain their interests and priorities, to help identify potential counterparts and promote tourism growth and development by marketing the region as a multi-faceted but single destination.

Member countries include Angola, Botswana, DR Congo, Lesotho, Madagascar, Malawi, Mauritius, Mazambique, Namibia, South Africa, Seychelles, Swaziland, Tanzania, Zambia and Zimbabwe.