This study investigates the effects of adding paper waste to improve the physical and mechanical properties of mycelium-based green composites (MBCs) produced from lignocellulosic materials (corn husk and sawdust) and *Lentinus sajor-caju* mushroom mycelia. The addition of paper waste increased the density of MBCs, with 20% paper waste in corn husks enhancing compression, bending, and impact strength by over 20%. MBCs with 10% paper waste in corn husks also reduced water absorption. However, adding paper waste to sawdust did not improve MBC properties. The study highlights the potential of using paper waste to enhance MBC performance, making them suitable for sustainable packaging and home decorative items. Despite these improvements, further research is needed to address limitations such as low tensile strength and high shrinkage to fully realize the potential of MBCs. The findings provide valuable insights into the use of paper waste as a sustainable material in the production of environmentally friendly composites.This study investigates the effects of adding paper waste to improve the physical and mechanical properties of mycelium-based green composites (MBCs) produced from lignocellulosic materials (corn husk and sawdust) and *Lentinus sajor-caju* mushroom mycelia. The addition of paper waste increased the density of MBCs, with 20% paper waste in corn husks enhancing compression, bending, and impact strength by over 20%. MBCs with 10% paper waste in corn husks also reduced water absorption. However, adding paper waste to sawdust did not improve MBC properties. The study highlights the potential of using paper waste to enhance MBC performance, making them suitable for sustainable packaging and home decorative items. Despite these improvements, further research is needed to address limitations such as low tensile strength and high shrinkage to fully realize the potential of MBCs. The findings provide valuable insights into the use of paper waste as a sustainable material in the production of environmentally friendly composites.