The phenomenon of ethnic identity and unique cultural heritage of the Volga Germans of Argentina considered in the article is multidimensional. The author analyzes it on the example of the Entre Rios province. In September 2023 the author conducted an expert survey in 15 localities of the province. The information obtained as a result of the survey is grouped in the article into several thematic blocks: ethnic identity; dialect and German language learning; activities of German national-cultural associations to preserve intangible cultural heritage, forecasts and development trends.