Though the advantages of food delivery apps are undeniable for consumers and food service providers in Vietnam, little research has been undertaken to systematically investigate the determinants influencing the intention to use these apps of Vietnamese consumers, especially potential consumers belonging to the Y and Z Generations. Consequently, the study attempts to understand consumers' perspectives, to determine the factors affecting the food delivery apps usage intention of Vietnamese Y and Z generations by extending the UTAUT framework (Venkatesh et al., 2003) with two new explanatory variables "personal innovativeness" and "self-efficacy". A quantitative research design was used with four hundred and ninety valid samples yielded via an online survey. The findings indicate that performance expectancy, social influence, facilitating conditions, personal innovativeness and self-efficacy were significant antecedents of the food delivery apps usage intention of Vietnamese Y and Z generations. It has also been proven that performance expectancy has the highest positive influence on usage intention, followed by social influence and self-efficacy. Moreover, this research confirms the importance of usage intention on the food delivery apps actual use of young consumers. These findings of the research are important for future studies as well as provide the food delivery service providers and restaurant owners with more knowledge about how to attract new customers while leveraging these advantages to retain existing customers.