This study aimed to assess the radiation shielding properties of ten low-density high-entropy alloys (LWHEAs) using Phy-X/PSD software to analyze various shielding parameters, such as attenuation coefficients ( and ), mean free path (), effective atomic number (), and removal cross-section (), in the energy range of Image 1 to Image 2. A comprehensive evaluation was performed to compare the attenuation outcomes provided by HEAs with a range of shielding materials documented in the literature. The study also calculated the build-up factors (BUFs) of the alloys by using the GP-fitting interpolation method. The stopping power of the alloys against ions was analyzed using the SRIM Monte Carlo code, considering total stopping power (TSP) and projected range (PR). The results indicated that HEA8 () had the best performance in terms of shielding against -rays, fast neutrons, and ions, as it achieved the highest values of parameters such as , , , and , along with the lowest values of HVL, TVL, , BUFs (Image 3 Image 4), TSP, and PR. On the other hand, HEA10 () had the lowest BUFs in both lower (Image 5 Image 4) and higher (Image 6 Image 4) energy regions. The order of for the alloys was found to be . The study concluded that LWHEAs possess superior radiation shielding properties compared to conventional materials, making them a promising new class of materials for radiation shielding applications.