This paper investigates sector-specific driving forces for the standardization activities at national standardization organizations. In the first part, theoretical hypotheses concerning sector-specific standardization are derived. The empirical test is performed by a two-step procedure. First, based on 19 sectors, these hypotheses are tested empirically for Germany. The results show that R&D-intensive sectors standardize very actively; additionally, intellectual property rights play an important role. Furthermore, standardization increases with the concentration of the enterprises up to a certain threshold, where standardization activities decline again. Finally, export-intensive sectors tend to standardize more. Secondly, because of the small data base, these hypotheses are empirically tested in a pool model, an international cross-section approach based on 20 sectors and seven countries. These results are generally in concordance with the findings of Germany. After a summary of the results, recommendations for future standardization practice are given.