Perbatasan Jerman dalam (bahasa Jerman:innerdeutsche Grenzecode: de is deprecated atau deutsch-deutsche Grenze; awalnya juga Zonengrenze) adalah perbatasan antara Republik Demokratik Jerman (RDJ, Jerman Timur) dan Republik Federal Jerman (RFJ, Jerman Barat) dari 1949 sampai 1990. Tak meliputi Tembok Berlin yang serupa dan terpisah secara fisik, perbatasan tersebut memiliki panjang 1.393 kilometer (866mi) dan terbentang dari Laut Baltik sampai Cekoslowakia.
Walled In (2009). Deutsche Welle animated documentary describing the border security systems. (Dalam bahasa Inggris)
Making of Walled In (2009) Deutsche Welle documentary describing the making of the documentary animation. (Dalam bahasa Inggris)
Border Crossing (2009). Deutsche Welle documentary film about the preserved border installations at Hötensleben and Marienborn. (Dalam bahasa Inggris)
Victim and Border Guard (2009). Deutsche Welle documentary reuniting an East German border guard and an attempted escapee who was seriously injured on the border. (In English)
Grenzalarm (1970s). East German film depicting how border guards responded to alerts on the border. (Dalam bahasa Jerman)
Grenzer (1981). East German propaganda film illustrating the work of the East German border guards. (Dalam bahasa Jerman)
Die innerdeutsche grenze (1970s). West German documentary film about the inner German border. (Dalam bahasa Jerman)
European Green Belt. An initiative to turn the length of the former Iron Curtain into an international network of protected areas for wildlife. (In English)
Das Grünes Band. Project of the conservation organisation BUND to preserve the inner German border as a nature reserve. (In German)
An interactive map. An interactive map of the inner German border in Openstreetmap.