The 2012 Open Castilla y León was a professional tennis tournament played on hard courts.

It was the 27th edition of the tournament which was part of the Tretorn SERIE+ of the 2012 ATP Challenger Tour.

It took place in Segovia, Spain between 21 and 27 August 2012.

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: