Meat production has a substantial negative influence on the environment, as livestock significantly contributes to resource depletion, greenhouse gas emissions, and ecological deterioration. This chapter explores how meat substitutes can help mitigate these issues and the effects that they have on the environment, nutrition, and society. Meat analogues, which include plant-based, fungi-based, and even cultured meat cell-based options, are an effective way of mitigating the adverse impact of conventional meat production on the environment. The research highlights the need for dietary transition in order to minimize the unsustainable trend of worldwide meat consumption, which fuels climate change, pressures on land use, and health risks like metabolic disorders. While plant-based foods have been shown to produce far fewer greenhouse gas emissions and use less land, water, and other resources than animal-based foods, there can be a wide variance in their environmental impact, depending on what ingredients or the processing methods used. The protein composition and bioavailability of plant-based meat substitutes (PBMAs) differ from those of animal products in terms of nutrition. PBMAs often include less fat and more fiber, but they may be deficient in important nutrients like methionine and have a lower iron bioavailability. This emphasizes how crucial it is to optimize formulations to guarantee enough nutrition. Effective marketing tactics, cost, and sensory replication are critical to PBMA consumer adoption, particularly in areas with deeply ingrained meat-consuming customs. An equitable transition to sustainable food systems, however, requires addressing regional differences and the socioeconomic functions of animals in low-income nations. Despite obstacles, PBMAs provide a valuable path for building resilient food systems while tackling environmental, nutritional, and financial issues.