Nigeria is being the top country by AIDS estimated deaths in the world. As of 2015, AIDS estimated deaths in Nigeria was 180,000 persons that accounts for 17.75 % of the world's AIDS estimated deaths. The top 5 countries (others are South Africa, India, Mozambique, and Kenya) account for 49.61 % of it. The world's total AIDS estimated deaths was estimated at 1.01 million persons in 2015.
AIDS deaths are the estimated number of adults and children who died due to AIDS-related causes. (UNAIDS estimates)