The rapid development of civil infrastructure in coastal and marine regions, particularly in high-rise projects with diverse applications, has highlighted the need for deep foundation systems with high bearing capacity and accurate settlement control as a major challenge in geotechnical engineering. Among various foundation solutions, driven steel pipe piles are widely used in offshore and coastal structures; however, despite their extensive applications, they are associated with several limitations, including excessive penetration, unpredictable settlement behavior, and insufficient improvement of the surrounding soil confinement. These limitations may reduce load transfer efficiency and increase construction costs. Therefore, modifying pile geometry and enhancing the soil–pile interaction mechanism has become essential for developing innovative solutions, such as barbed pile systems. In response to these challenges, this study experimentally investigates the effect of shear barbed installed on the surface of steel piles on improving their axial performance in sandy soil conditions. To achieve this objective, seven static load tests were conducted in accordance with FHWA and ASTM guidelines on small-scale model piles at a field test site located in Bushehr Port. The experimental program consisted of one conventional plain pile and six barbed steel piles with different configurations, including various numbers of barbed (two, three, and four Barbed) and installation angles (20° and 33°). The results demonstrated that increasing the number of barbed up to four, particularly with an installation angle of 33°, resulted in a significant enhancement in ultimate bearing capacity, reaching more than 600% compared with the plain pile, as well as an increase in the spring stiffness modulus by approximately 293%. However, the ultimate settlement behavior exhibited a nonlinear trend, and in some cases, especially for the three-fin configuration, settlement increased due to the