The batik and textile industry is one of the producers of liquid waste from the coloring process. Liquid waste in the batik coloring process is very dangerous. There are several methods of processing batik liquid waste, one of which is the adsorption method using activated carbon adsorbent. In this research, activated carbon is made from bagasse which is activated with NaCl. The chemical composition of bagasse is 50% cellulose, 25% hemicellulose, and 25% lignin. The purpose of this experiment was to determine the process of making activated carbon adsorbent from bagasse and to determine the absorption rate of bagasse adsorbent against red procion dye in batik industrial wastewater. Research on the use of activated carbon from bagasse to absorb red procion dye from batik industrial waste has been carried out. Activated carbon was made by carbonization process at 4000°C for 30 minutes. The chracterization of activated carbon produced was carried out by FTIR to determine its functional groups. The optimum conditions for the adsorption of activated carbon from bagasse against red procion were carried out by varying the contact time, weight of activated carbon, and pH. The results of FTIR characterization on activated carbon from bagasse showed the presence of -CO- and -OH functional groups. The optimum conditions for adsorption of activated carbon from bagasse were obtained at a contact time of 90 minutes with a weight of 0.1 g of activated carbon and an optimum pH of 5 for 50 mL of red procion dye with a concentration of 20 mg / L. The absorption effectiveness of red procion dye from batik industrial wastewater by activated carbon from bagasse in optimum conditions is 69, 04%.