Valdemar Langlet (December 17, 1872 Lerbo, Sweden – October 16, 1960 in Stockholm) was a Swedish publisher and an early Esperantist. With his wife Nina Borovko-Langlet in Budapest, he is credited with saving many Jews from the Holocaust, by providing Swedish documents saying that people were waiting for Swedish nationality. In 1965, Valdemar and Nina Langlet were recognized as Righteous Among the Nations by Yad Vashem.
Valdemar Langlet is described in the novel The Wallenberg Dossier.
