This study investigates Knowledge management as a strategic tool for performance in the Nigeria GSM telecommunication industry. MTN, Airtel, GLO and Etisalat were the studied organizations. The objective of the study was to determine how firms achieve competitive advantage using knowledge sharing, knowledge acquisition, knowledge application, management orientation and organisations culture to ... [Show full abstract] aid better performance. The survey design was adopted, making use of simple random and stratified sampling techniques with structured questionnaire to select 105 respondents as study participants. Test of hypotheses was carried out using multiple regression analysis. Results showed that significant relationships exist between elements of knowledge management and organization performance (i.e R= 0.519, R 2 =0.269; Adjusted R 2 =0.232, F-statistics= 7.284; p-value= 0.000). Findings revealed that organizations should pay adequate attention to elements of knowledge management (i.e knowledge sharing, knowledge acquisition, knowledge application, management orientation and organizations culture) in order to achieve sustainable competitive advantage and remain competitive in the dynamic business environment. Hence, the study recommended that management need to support and empower employees' creative ideas, which can be achieved by encouraging an innovative climate or culture where all employees have access to suggest or bring about an idea that can give the organization an edge in the market.