Luis Brethauer (born 14 September 1992 in Aschaffenburg) is a German racing cyclist who represents Germany in BMX. Luis Brethauer is a so-called sports soldier (German Bundeswehr). He takes part as TSV Betzingen in Air BMX team. His sport career started in 2000. His first international championship happened in 2003 (European Championships in Klatovy), where he finished third. In the German Championships 2010, he was vice-winner. In 2011 Brethauer took his first noble ranking as 10th in the European Championship in Haaksbergen. He was also 10th at the World Championships in Copenhagen.