Dyes are widely used coloring agents in various industries such as textiles, food, cosmetics, leather, and paper printing. Among these, methylene blue (MB) is one of the most commonly used dyes. Tea, being the most consumed beverage after water, generates nearly 3 million tons of tea waste globally every year. In this study, tea waste (TW) was selected as a cost-effective and eco-friendly adsorbent for the removal of methylene blue. Experiments were conducted under varying conditions, including different pH levels, adsorbent dosages, and contact times. The results showed that dye removal efficiency increased with longer contact time and decreased with higher pH levels. A maximum removal efficiency of 97.87% was achieved using 0.7 g of the adsorbent. These findings demonstrate that tea waste can serve as an inexpensive and effective material for removing methylene blue from industrial wastewater effluents.