The pandemic has changed so many aspects of life, including business competition in the food and beverage sector. Various ways are done to survive in difficult situations, one of which is a strategy that is to create marketing content that never existed or was rarely done before, such as fast food restaurant companies that invite their consumers to buy products from other restaurants, including their competitors. This work is based on Marketing Strategy, Viral Marketing, Consumer Buying Interest, and AIDA theory. This study aims to examine the influence of content marketing on consumer buying interest. This study used 100 respondents with a quantitative methodology with survey research methods in the form of online questionnaire and explanatory research types. Data were analyzed using simple linear regression. The finding of this research indicate that the marketing strategy by creating unique and interesting content that leads to viral marketing is one of the strategies that has an influence on consumer buying interest. Content marketing carried out by Burger King Indonesia can be said to have succeeded in attracting the attention of many people and leading to potential consumers. The results of this study can be used as a recommendation for Burger King Indonesia to pay attention to the marketing strategies carried out so that they can be more competitive and have an impact on consumer buying interest.