Aspergillus niger is a pathogenic fungus causing collar rot disease in groundnut (Arachis hypogaea L.). The species is currently recognized as one of the most severe threats to groundnut worldwide, negatively impacting on productivity and quality of groundnut. This study was conducted to isolate bacterial strains capable of inhibiting the pathogenic A. niger QT1 strain as well as the production of some extracellular cell wall hydrolytic enzymes