The similarity between the languages is explained by their origin from the same proto-language. The aim of this study was to analyze the existing linguistics approaches to the classification of Germanic languages, in particular, varieties of the English language, using the genealogical approach that underlies the classification of related languages. The research methods were comparative-historical method and classification method. In the course of the study, a comparative historical analysis of the English language was carried out and its etymology was established starting from the moment of its inception and ending with its modern state. It has been found that modern English has a very complex phonetic and grammatical structure which is the result of the fusion, struggle, one-sidedness or spread of at least twelve languages. The practical significance of the study is determined by the fact that the compiled classification of dialects can be used in the preparation of educational literature for learning English.