The 1999 BMW Open was a men's tennis tournament played on Clay courts in Munich, Germany that was part of the World Series of the 1999 ATP Tour. It was the eighty-third edition of the tournament and was held from April 26 – May 3.
Thomas Enqvist was the defending champion, but lost in the first round this year.
Franco Squillari won the title, defeating Andrei Pavel 6–4, 6–3 in the final.