The activated bamboo charcoal as an alternative to improve the hardness and increase rubber volume that leads to better rubber sheet quality. The study aims to determine the characteristics of rubber sheet with raw latex composite materials and activated bamboo charcoal. The amount of activated bamboo charcoal in rubber sheet formulation was varied in different mass, which was 25, 30, 35, 40, 45, and 50 grams. Each treatment was replicated three times. The parameters were ash content, initial plasticity (Po), Plasticity Resistance Index (PRI) and Mooney viscosity. The results showed that the variations of treatment in the amount of activated bamboo charcoal affected ash content, initial plasticity (Po), Plasticity Resistance Index (PRI) and Mooney viscosity. The characteristics of rubber sheet met the quality of Standard Indonesian Rubber (SIR) requirements according to SNI 06-1903SNI 06- -2000 with ash content characteristics for all treatments, Po and PRI, the treatments of F3 (raw latex of 945 g and activated bamboo charcoal of 35 g) to F6 (raw latex of 945 g and activated bamboo charcoal of 50 g). The mooney viscosity of rubber sheet for all treatments met the quality standard of commercial SIR, minimum 40.