The 15 studies highlighted in this special issue collectively underscore the significant impacts of market participation on farmers’ well-being, income, poverty reduction, dietary diversity, and rural economic growth. They also delve into the importance of marketing channel choice and the role of e-commerce in enhancing farmers’ market linkages. In addition, they address farmers’ preferences for market access interventions and the examination of market power within the agricultural industry, especially in low-income countries. The key findings include: (1) Market participation is critical for improving farmers’ subjective and objective well-being, with studies demonstrating positive impacts on income, poverty reduction, and dietary diversity; (2) The choice of marketing channels significantly influences income, with evidence suggesting online sales can substantially increase farmers’ earnings; (3) E-commerce plays a pivotal role in connecting farmers to broader markets, leading to income growth and enhanced market visibility; (4) Understanding and addressing farmers’ preferences for market access through interventions like systematization policies and joint ventures can facilitate better market integration and support inclusive business models; (5) Analysis of market power within the primary foods industry reveals rising markups, particularly affecting low-income countries. These findings suggest that policies and interventions aiming to improve market access, promote e-commerce, and consider farmers’ preferences and market power dynamics can significantly impact farmers’ incomes, poverty levels, and overall rural economic development.