Johanna Olbrich (alias 'Sonja Lüneburg': 26 October 1926 – 18 February 2004) was an East German spy.
Infiltrated into West Germany from Colmar (France) in 1966 or 1967, she moved to Bonn in 1969 and obtained work as a secretary with a senior politician.Her espionage career ended abruptly in 1985 when she lost her (false) passport during a vacation in Rome.
Fearing that the passport had fallen, or could fall, into the hands of western counter-intelligence services, which would lead to her unmasking, her handlers hurriedly ordered her back: she was smuggled into East Germany near Lübeck within the week.