Biochar has emerged as a promising tool in environmental management, garnering considerable interest for its ability to tackle diverse environmental issues. Its utilization offers potential solutions ranging from soil improvement and carbon sequestration to water and air quality enhancement. With its multifaceted applications, biochar stands as a key player in addressing contemporary environmental challenges and promoting sustainable practices. This book chapter provides a comprehensive overview of the application of biochar in environmental management. One of the key focuses of this chapter is the role of biochar in soil improvement and carbon sequestration. The chapter discusses the use of biochar in remediating contaminated soils and reducing greenhouse gas emissions from agricultural soils. Moreover, the chapter addresses the utilization of biochar in waste management, including its role in organic waste valorization and reducing greenhouse gas emissions from waste streams. This book chapter provides insights into the multifaceted applications of biochar in environmental management, highlighting its potential to address various environmental challenges and contribute to sustainable development goals.