German Oxford Alumni Societies are existent in the Rheinland ('rheinland - at - oxford-alumni.de' )

'rhein-neckar at oxford-alumni.de' for Rhein-Neckar Branch (probably run as an Oxbridge Branch)

http://www.oxford-society.de/ Frankfurt Branch

http://www.oxfordsociety.de/ Munich Branch

There is also a thriving Oxbridge Forum at XING if you are a member.

I also take active part in the Alumni Activities of the RWTH Aachen, both in Mannheim Ludwigshafen as well as in the past 6 months in Sao Paulo.

Whilst the official place is the RWTH Alumni office, please feel free to contact me as well if you are in need of local contacts.