Currently, despite the available factual material and the existence of scientific publications, dealing with certain ethic aspects of Tatar and Turkish ethno-cultures, the comprehensive and comparative linguistic study, devoted to the issues of speech stereotypes in the linguistic ethics of Turkic peoples, is relevant in modern linguistics. Within the framework of this study, speech stereotype is both verbal and non-verbal means of speech communication of the native speaker, which differ by their correlation with the thematic-situational level. In this article, speech stereotypes in the linguistic etiquette of Tatar and Turkish ethno-cultures are investigated on the basis of stable speech formulas, phraseological units, proverbs, and sayings. Descriptive and comparative methods, the method of continuous sampling, the method of processing, linguocultural and lexico-semantic analysis were used in the research. The communicative stereotypes, determining the choice of linguistic units of speaking etiquette (addresses, greetings, gratitude and farewells) were systematized. Extralinguistic features of ethno-cultural stereotyping of speech behavior of the Tatars and Turks were considered. The comparative analysis allowed to identify typical and specific characteristics of ethno-cultural stereotypes of speech communication of the Tatars and Turks. The analysis of speech stereotypes in linguistic etiquette led to the conclusion, that despite belonging to different ethno-cultures, the Tatars and the Turks remain faithful to observance of folk customs and specific speech cultures.