The production of rubber wood in the world is about 63 million green tons a year, making it one of the world’s most traded tropical wood materials. Around the world, almost 95% of rubber wood production is in Asia, where Indonesia, Thailand, and Malaysia are the major rubber-producing countries. The valorization of rubber wood waste and crumb rubber factory by-products offers a sustainable solution to environmental and energy challenges. Converting these unutilized resources into bioenergy and bioproducts can address waste management issues and contribute to a circular economy. Rubber wood waste, often discarded or used inefficiently, and crumb rubber factory waste, which poses disposal problems, can be transformed through advanced bioconversion technologies. Methods such as pyrolysis, gasification, and anaerobic digestion were evaluated for their efficiency and environmental impact in producing biofuels, biochar, and other valuable chemicals. Valorizing rubber wood waste and crumb rubber factory by-products supports renewable energy production, decreases greenhouse gas emissions, and promotes the generation of valuable bioproducts. This chapter provides an overview of the production of rubber wood waste, which is used in the production of bioenergy and various bioproducts. However, rubber wood waste is difficult to dispose of due to its non-biodegradability, which harms the ecosystem. The chapter focuses more on the production of bioenergy, various bioproducts from rubber wood, and crumb rubber factory waste.