Cellulose, a renewable biomass made of d-glucose units linked by β-1,4 bonds, is a key structural component of plants, crucial for carbon flow in ecosystems, and serves as an important protein source for ruminants. Despite its widespread use, large amounts of cellulose-containing materials and waste remain underutilized, posing a challenge in developing economically viable processes for their effective use. Biotechnology, driven by microbial cellulases, offers a sustainable solution for converting cellulosic biomass into valuable products. These enzymes, including endoglucanase, exoglucanase, and β-glucosidase, break down cellulose’s β-1,4 glycosidic bonds and are used in industries such as textiles, detergents, food, and paper. As industrial demand grows, there is an increased need for cellulases that are stable at high temperatures and extreme pH. Research into fungal and bacterial cellulases, especially from species like Humicola, Trichoderma, Penicillium, Pseudomonas, and Bacillus, has highlighted bacterial cellulases as particularly promising due to their potency and resistance to feedback inhibition. Bacillus species, adapted to high temperatures and salt concentrations, offer an attractive source for cellulase production. The focus is now on engineering thermo-stable and alkaline-resistant cellulases to enhance industrial applications. This study aimed to isolate local Bacillus species to facilitate efficient cellulase production, with significant implications for sustainable bioprocessing and climate change mitigation through the use of cellulosic waste.