In this chapter, we delve into the burgeoning field of metabolomics applied to enhance the flavor and nutritional quality of tomatoes. Metabolomics offers a comprehensive approach to understanding the biochemical composition of tomatoes, encompassing the intricate interplay between genes, proteins, and metabolites. By employing cutting-edge “OMICS” technologies, including genomics, transcriptomics, proteomics, and metabolomics, we can gain insights into the complex molecular networks governing tomato flavor and nutritional attributes. Our discussion centers on how metabolomics can identify key metabolites associated with desirable flavor profiles and nutritional benefits in tomatoes. We explore the impact of genetic factors, environmental conditions, and agronomic practices on tomato metabolite composition. Furthermore, we highlight innovative strategies for optimizing tomato quality through targeted metabolic engineering and breeding approaches. It also underscores the significance of metabolomics in unraveling the biochemical pathways that contribute to specific flavor compounds and health-promoting constituents in tomatoes. By integrating metabolomics data with other “OMICS” data sets, we aim to advance our understanding of tomato metabolism and facilitate the development of superior tomato varieties with enhanced flavor and nutritional attributes. Overall, this chapter provides a comprehensive overview of the application of metabolomics in the context of tomato quality enhancement, emphasizing its potential to revolutionize tomato breeding and cultivation practices for improved consumer satisfaction and health outcomes.