2009 Siemens Open

The 2009 Siemens Open was a professional tennis tournament played on outdoor red clay courts. This was the seventeenth edition of the tournament which is part of the Tretorn SERIE+ of the 2009 ATP Challenger Tour. It took place in Scheveningen, Netherlands between 6 July and 12 July 2009.
Singles entrants.
Other entrants.
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Champions.
Singles.
 Kristof Vliegen def. Albert Montañés, 4–2, RET.
Doubles.
 Lucas Arnold Ker / Máximo González def. Thomas Schoorel / Nick van der Meer, 7–5, 6–2