The current work aims to develop a reliable and robust RP-HPLC method for analyzing Fosamprenavir and its potential impurities, including isomer, amino, propyl, nitro, and Amprenavir. The method used a Zobrax C18 column with a mobile phase of 0.1% V/V orthophosphoric acid in water and acetonitrile in gradient elution at a flow rate of 1 mL/min to accomplish efficient separation with detection at 264 nm and column temperature of 30 ± 2