For the last 20 years, while many electronic business (e-business)/electronic commerce (e-commerce) systems have been successfully adopted in businesses across diferent industries, a signiicant number have failed, especially in small to medium enterprises (SMEs). It is therefore necessary to explore critical success factors (CSFs) for SMEs in adopting e-commerce success. A blend of quantitative and qualitative research methods were used, consisting of literature review, focus group studies, pilot tests, and surveys. Total survey was of 11.54% (277 out of 2401). Data analysis procedures were adopted, which comprised initial reliability analysis, validity analysis, t-testing, factor analysis, and detailed reliability analysis. As a result, a total of 15 items were identiied as common CSFs for SMEs successfully adopting e-commerce system, which could be adopted as an efective tool for assisting SMEs in efectively adopting e-commerce systems, and as a yardstick further to develop new methods for measuring e-commerce success.