By car: 
A28 exit Haarentor (coming from Bremen) or exit Wechloy (coming from Emden/Leer)
Address for navigation systems: Carl-von-Ossietzky Straße 9-11, 26129 Oldenburg
Central parking lot available

By bus:
Bus route 306, bus stop Uni/Campus Wechloy

By train
to Oldenburg (Oldb) main station or Oldenburg Wechloy (within walking distance)
From the main station, take bus 306 to the Uni/Campus Wechloy stop
 

Be sure to select Oldenburg (Oldb).