Jan I has finished sixth in the 1972 Speedway World Pairs Championship, and Jan II was started in 1986 and 1989 Under-21 World Championship.
William III of England | George III of the United Kingdom | Henry III of England | George III | Edward III of England | Henry III | Edward III | Charles III of Spain | William III | Loudon Wainwright III | WTA Tier III tournaments | Richard III of England | Benigno Aquino III | Pope Alexander III | Star Wars Episode III: Revenge of the Sith | Henry III of France | Gustav III of Sweden | Jan van Eyck | Jan Matejko Academy of Fine Arts | Jan Hammer | Shalmaneser III | Alexander III of Russia | Albatros D.III | Jan Peerce | Frederick III | Rainier III, Prince of Monaco | Jan Hus | Otto III | Jan Mayen | Frederick William III of Prussia |