Methods, systems, and computer program products for memory garbage collection via object grouping are disclosed. Normative objects are allocated in a non-native memory referencing respective one or more native objects in a native memory. The non-native objects are grouped into non-native object groups based upon information regarding object references associated with respective ones of the native objects. Objects in respective ones of the one or more non-native object groups are provided one or more references to other said objects of the non-native object groups to create connected object groups. Unused ones of the connected object groups are detected. And objects of the detected unused ones of the connected object groups are de-allocated.