Some restaurants have been prompted to change their business models to adopt innovative methods for Online Food Delivery (OFD) services as a result of the COVID-19 outbreak. The purpose of this study was to evaluate the Behavioral Intention of the Vietnam market to accept and use OFD in their daily life. The study employed the extended Unified Theory of Acceptance and Use of Technology (UTAUT2) model (Venkatesh et al., 2012) which was adapted to the Vietnam context. The participants were 407 people from different areas across the country, who completed an online questionnaire. The findings from this study suggest that Effort Expectancy, Hedonic Motivation, Price Value, Facilitating Conditions, and Habit significantly influence the Behavioural Intention of customers regarding the intention to use OFD during Covid 19 period. On the other hand, in this area, Trust and Physical Obstacle factors were found to have a moderating role in the relationship between each factor in the UTAUT2 model and Behavioural Intention.