The article analyzes documents, which show the effort to eliminate proper names of German origin in the area of the contempotary Czech Republic after the Second World War. The proposals of the Central Archive of the Land Registry (a department of the Ministry of Finance) suggested obligatory changes of personal names (especially family names) and of various geographic names. These proposals were critically assessed by the Ministry of Finance – the conclusions are reviewed here as well. A comparison of the analyzed documents with the historical changes of German proper names (names of German origin) after May 1945 documents that the proposed changes of the Central Archive of the Land Registry were not realistic and were not accepted. The analyzed documents, however, represent the social atmosphere in the Czech society after the Second World War.