Tibor Sekelj (in Hungarian: "Székely Tibor") (14 February 1912 – 20 September 1988) was an explorer, writer and lawyer. He traveled a lot in South America, Africa and Asia. He spoke many languages, including Esperanto, the made up international language. He was member of the Academy of Esperanto and honorary member of the Universal Association of Esperanto (UEA). He wrote books in Esperanto. He came from a Jewish family.