According to multiple sources, including the World Population Review, US News, and Wikipedia, Lesotho has the highest suicide rate in the world, with a rate of 72.4 suicides per 100,000 people. Other countries with high suicide rates include Guyana, Eswatini, South Korea, Kiribati, Federated States of Micronesia, Lithuania, Suriname, Russia, and South Africa. It is important to note that suicide rates can vary widely from year to year and that there are many other countries with high suicide rates.