The article deals with Germanisms in the contemporary urban dialect of Poznan. The aim of the article is to indicate the influence of German language structures on the lexicon, syntax and phraseology of the Poznań dialect. Germanisms occurring in the lexicon were considered in the context of the formation of Poznań Polish (dialectisms, archaisms, regionalisms) and in chronological terms, based on Bogdan Walczak’s studies (three chronological layers of Germanisms). In terms of syntax, reference was made to German grammatical constructions, which were transferred to the Poznań dialect. The division of borrowings in the area of Poznań phraseological units is based on the scheme adopted by the researchers, distinguishing German phraseological units (expressions and phrases) and German idiom units. The collected materials showed a great influence of the German language on the presented levels of the organization of the Poznań dialect and a strong rooting of the studied structures in the Polish of the Poznań people.