Methane (CH4) emissions from paddy fields represent a significant source of greenhouse gases contributing to climate change. This chapter explores the processes and factors influencing methane production in rice paddies, highlighting the biochemical pathways and microbial activities involved. It delves into the impact of agricultural practices, soil properties, and water management on methane emissions. Furthermore, this chapter examines the global implications of methane release from paddy fields, emphasizing its role in the greenhouse effect and global warming. Mitigation strategies are critically analyzed, including water management techniques such as intermittent irrigation, the use of rice cultivars with lower methane emissions, and the application of organic and inorganic amendments to soils. Additionally, the potential of innovative technologies like biochar application and the integration of rice-fish farming systems are discussed. By addressing the socioeconomic and policy dimensions, this chapter provides a comprehensive overview of feasible and sustainable mitigation options. It aims to guide researchers, policymakers, and farmers in adopting practices that reduce methane emissions, thereby contributing to climate change mitigation efforts. This synthesis of current research and practical solutions underscores the importance of collaborative efforts in achieving a reduction in greenhouse gas emissions from paddy fields.