The 2012 Open Sud de France was a men's tennis tournament played on indoor hard courts. It was the 25th edition of the Open Sud de France, and was part of the ATP World Tour 250 Series of the 2012 ATP World Tour. It took place at the Arena Montpellier in Montpellier, France, from January 28 to February 5, 2012. It was the first edition to be held in January and the second held in Montpellier.