THINK is a non-profit organisation located in Durban, South Africa. It was founded in 2013 to improve the quality of life of people affected by TB and HIV in South Africa and around the world.

THINK consists of a core team of highly qualified researchers complemented by about 175 dedicated women and men who provide care for over 100,000 patients in KwaZulu-Natal. THINK has dedicated research sites and programme offices across KwaZulu-Natal province.

THINK conducts clinical research, including phase II-III clinical trials, and implements public health programmes supported through international research funding as well as government, philanthropy, industry and the Global Fund. As a foundation to this work THINK engages with communities and local stakeholders to provide capacity building, training and support.