The 2017 Tanzania Malaria Indicator Survey (2017 TMIS) was the second stand-alone malaria indicator survey conducted in the country, following the one implemented in 2011-2012 (2011-12 THMIS). The survey involved a nationally representative sample of 9,724 households from 442 sample clusters. The primary objective of the 2017 TMIS is to provide up-to-date estimates of basic demographic and health indicators related to malaria. Specifically, the survey collected information on vector control interventions such as mosquito nets, intermittent preventive treatment of malaria in pregnant women, and care seeking and treatment of fever in children. Young children were also tested for anaemia and for malaria infection. Overall, the key aims of the 2017 TMIS are to: • Measure the level of ownership and use of mosquito nets • Assess coverage of intermittent preventive treatment for pregnant women • Identify health care seeking behaviours and treatment practices, including the use of specific antimalarial medications to treat malaria among children under age 5 • Identify diagnostic trends prior to administration of antimalarial medications for treatment of fever and other malaria-like symptoms • Measure the prevalence of malaria and anaemia among children age 6-59 months • Assess malaria knowledge, attitudes, and practices among women age 15-49 • Assess housing conditions • Assess the cost of malaria-related services The information collected through the 2017 TMIS is intended to assist policymakers and program managers in evaluating and designing programs and strategies for improving the health of the country’s population.