Objective: The aim of our study was to investigate the relationship between foot width, postural stability, upper extremity isometric muscle strength and shot performance in gun shooting athletes. Material and Methods: The sample group of the study was composed of 12 national team athletes. The postural sway of athletes was evaluated with Kistler® brand Body Sway Module and isometric muscle strength was evaluated with IsoMed 2000 isokinetic muscle strength measurement device. Shooting performances were evaluated by taking the average of the official competition results of 2017- 2018 shooting. The relationship between the data was analyzed by Spearman Correlation analysis. Results: There was a significant and moderate relationship between isometric muscle strength of shoulder abductor muscles and shot performance. There was no significant relationship between isometric muscle strength of shoulder adductor muscles and shot performance. It was determined that there was a significant and high-level relationship between athletes' foot width to which they are accustomed and total sway rate, anterior-posterior sway rate and total sway area; there was a moderate relationship with medio-lateral sway area. There was no significant relationship between the foot width which is as ½ and ¾ of the shoulder width and postural sway. Conclusion: This study showed that the effect of isometric muscle strength of the shoulder abductor muscles on shooting athletes performing at national and international level affected the shooting performance, the conventional foot width had effect on postural sway and that the foot width other than the conventional foot width had no effect on postural sway and sway rate. In this context, we think that strength exercises for shoulder abductor muscles to be performed in the conventional foot width can improve the shooting performance of shooting athletes.