The purposes of this research were to find out (1) the effect of interpersonal skill on salesperson performance, (2) the effect of salesmanship skill on salesperson performance, (3) the effect of interpersonal and salesmanship skill on salesperson performance. This study was a survey method with interviews, literature study, and questionnaires. The sample in this study was 45 salespersons of the PT Asuransi Wahana Tata Branch Semarang with purposive sampling. The data analysis technique used was multiple regression. From the analysis of multiple regression in this research, it was found that the interpersonal skill and salesmanship skill had positive impact on the salesperson performance. Based on the calculation using SPSS version 22, the result of interpersonal skill T test 2.630 and salesmanship skill T test 3.537 has more than T table 2.108 with significance less than 0.05. It means that each the independent variable partially has a significant influence on salesperson performance. Then, the result of determination coefficient (Adjusted R Square) showed that 0.445 or 44.5% of the dependent variable was interpersonal skill and salesmanship skill. It mean that 44.5% of the salesperson performance was influenced by interpersonal skill and salesmanship skill. While 55.5% was influenced by other variables which were not explored in this research.