The Junkers J.1000 was an exercise in aeronautical design produced by the Junkers company of Germany in the mid-1920s. No airplane was ever produced. The design was led by Otto Mader who was also responsible for such Junkers aircraft as the J.1, which was the first all-metal aircraft to enter mass production.

The J.1000 design project was initiated by company founder Hugo Junkers specifically for a promotional trip to the United States. During their 1924 visit with potential U.S. investors, Junkers and Ernst Zindel, chief designer at Junkers, proposed the J.1000 as a trans-Atlantic commercial transport. To sell their proposed craft, they brought design blueprints, renderings of the completed airplane as well as a model aircraft. Mock-ups of the interior cabins were set up at Junkers headquarters in Dessau Germany and photographs of them were included in these discussions. A proposed air route was also discussed connecting Europe and the United States through Iceland, Greenland and the Atlantic coast of Canada.

Not surprisingly, U.S. investor reaction was minimal. This futuristic craft was easily twenty-five years ahead of its time. Given the lack of investor interest, Junkers did not pursue this venture beyond this single visit to the United States. Design features of the J.1000 however were incorporated into later aircraft. For example, the concept of incorporating the passenger cabin within the main wing was again seen in the Junkers G.38 which first flew some five years later in 1929.

Uses standard controls.