Abstract: The subject of this study is the implementation of the principles of journalistic ethics in modern Spanish newspapers. The purpose of the study is to identify the level of compliance with journalistic ethics in the publications of the newspapers "ABC", "El Pais", "El Mundo", "La Vanguardia". The author notes that the greatest compliance with the principles of professional ethics is noted by readers of the newspaper "ABC". The research methodology is based on a systematic approach and includes the following methods: analysis of scientific literature on the research topic; content analysis of publications "ABC", "El Pais", "El Mundo", "La Vanguardia"; method of sociological questioning (mini-survey); method of statistical analysis; method of comparative analysis of the obtained results. As a result of this study, we obtained the following results: the level of compliance with the principles of journalistic ethics of each newspaper was revealed based on the data obtained from a mini-survey among Spanish-speaking readers. The areas of application of the results can be such as "ethics of professional activity", "political journalism", "international journalism". The novelty of this study lies in the methodology proposed by the author for analyzing the level of compliance with the principles of journalistic ethics. The author of the article came to the following conclusions: modern Spanish newspapers are characterized by a high level of compliance with journalistic ethics, except for the newspaper "La Vanguardia" (average level according to readers).