The study aims to analyze the effects of fake news on the issue of trust in digital content and how it reflects on the formation of the professional identity of a sample of media institutions in Algeria. This is achieved through conducting a field study on a sample of Algerian newspapers, radio stations, and television channels. The study adopts a research methodology that includes a questionnaire of opinions from practicing journalists in the public and private sectors in Algeria. It explores how fake news affects the issue of trust in the digital content they provide and how it reflects on the formation and transformation of the professional identity of the media institutions they work for. The research strategy revolves around collecting and analyzing available data to draw the main results and outputs. The study has generally found that fake news leads to a decline in trust in digital content and raises doubts among the audience about the accuracy and reliability of the information they receive. This negatively affects the professional identity of media institutions and their ability to deliver high-quality and reliable content. Keywords: Fake news, trust, digital content, professional identity, media institutions.