Promoting sustainable food consumption contributes to the achievement of the United Nation’s Sustainable Development Goals. This study investigated the key determinants of consumer intention to purchase organic meat in an emerging market and a unique model was developed by incorporating environmental concern and guilt with the key components of the Theory of Planned Behavior. This model was then validated by obtaining data from a sample of 402 Vietnamese consumers at five food stores in Ho Chi Minh City, using a paper-based survey. The findings reveal that consumers who are concerned about the environment are likely to formulate favorable attitudes and downplay monetary barriers associated with organic food purchase. In addition, while attitudes and guilt about buying conventional meat have a positive effect on organic meat purchase intention, perceived monetary barriers significantly reduce the intention. These findings highlight both the rational and emotional aspects of organic food purchase intention and have important implications for key stakeholders and the encouragement of organic meat consumption.