Gustavus Reinhold Nyländer (1776-1825, Kissy, Sierra Leone) was a German Lutheran missionary and linguist who worked in Sierra Leone. He worked under the auspices of the Anglican Church Missionary Society (CMS). Nyländer grew up in Lithuania and then attended a seminary in Berlin. He came to London in 1805. Nyländer arrived in Sierra Leone in September 1806 with and Johann Prasse, all three of them Lutherans. Their instructions were to leave the settlement to work amongst the Susu people as soon as possible.