The textile industry is one of the largest sources of environmental pollution, contributing vast amounts of wastewater laden with dyes, heavy metals, and toxic organic compounds. Traditional treatment methods often prove inefficient, costly, or unsustainable. Biochar, a carbon-rich byproduct derived from organic material through pyrolysis, has recently emerged as a promising solution for remediation in contaminated environments. This chapter explores the potential of biochar for the effective remediation of textile wastewater, highlighting its physicochemical properties that enable adsorption and degradation of various pollutants. The adsorption capability of biochar, due to its porous structure, high surface area, and functional groups, makes it highly effective in removing dyes, heavy metals, and organic contaminants from wastewater. We discuss the mechanisms of biochar interaction with textile effluents, focusing on adsorption, ion exchange, and surface complexation. Furthermore, the chapter examines how biochar modifications, such as activation or chemical treatment, can enhance its efficiency, allowing it to address specific contaminants more effectively. Case studies and experimental data are reviewed to showcase biochar’s efficacy in real-world textile effluent scenarios. Additionally, we consider the economic and environmental benefits of biochar applications, including its potential for carbon sequestration, making it a sustainable choice for industrial-scale applications. This chapter ultimately emphasizes biochar’s role as an environmentally friendly, cost-effective, and scalable approach for the textile industry’s wastewater challenges, positioning it as an asset in achieving cleaner and more sustainable industrial practices.