The 2010 Siemens Open was a professional tennis tournament played on outdoor red clay courts. This was the eleventh edition of the tournament which is part of the Tretorn SERIE+ of the 2010 ATP Challenger Tour. It took place in Scheveningen, Netherlands between 5 July and 11 July 2010.
- Rankings are as of June 21, 2010.
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Denis Gremelmayr def. Thomas Schoorel 7–5, 6–4
Franco Ferreiro / Harsh Mankad def. Rameez Junaid / Philipp Marx 6–4, 3–6, [10–7]