The current study aimed at examining the relationship between sporting goods salespersons’ work ethics and developing close relations (trust, commitment and loyalty) between customers and stores. The methodology of the study was descriptive (survey type). The statistical population consisted of all customers of sporting goods stores in Qazvin city. 370 customers were selected as the sample by convenience sampling method and Cochran’s sample size formula. Data were collected using Hasan Gholipour et al. (2012) salespersons' work ethics and customers' trust, commitment and loyalty. Results revealed a significant and positive relationship between customers’ trust, commitment and loyalty and salespersons’ work ethics and work ethics had the largest relationship and correlation with trust (R= 0.650). Independent t test (P≤0.05) results also showed a significant difference between male and female customers’ attitudes only in two variables of trust and commitment. Providing true information about products, safeguarding customers’ interests, embracing the principles of fairness and honesty to win customers’ trust offering high quality products and commensurate with customers’ interests and demands such as pricing and considering their complaints and suggestions can help develop the relationship between customers and sporting goods salespersons.