This chapter describes the influence of ethical concerns on food consumer behavior. It describes that ethical food consumers are people who align their purchases to their personal values: moral, environmental and social. It further links considerations of how environmental sustainability is affected by the food system, in particular animal agriculture. It addresses animal welfare, how veganism can be considered an ethical belief system, and which is the role of plant-based diets on ethical diet transitions. It touches upon ultra-processed foods, fair trade, social justice and consumer boycotts as influencing food choices. It reflects a broader societal shift, where consumers understand their role, their potential agency and power to change systems.