The prevalence and the precipitated factors of dietary supplements use among sportsmen is poorly investigated in Lebanon. This study aim to assess the prevalence of dietary supplements use among people performing sports in Lebanon and the precipitating factors influencing their use. This is a cross-sectional study where participants were selected from sports club all across Lebanon by convenient sampling. 23.24% of participants reported using dietary supplements with the highest supplements used being proteins and amino acids. The main reasons were to aid an inadequate diet and to increase muscle strength. Although the majority did not attend information session about dietary supplements, participants were mostly aware about dietary supplement use and potential risks.