A high performance liquid chromatography method was developed for the determination of organic acids in commercial samples ofGarcinia cambogiaextracts. The major organic acid in commercially available extracts ofGarcinia cambogiahas been found to be (-) hydroxycitric acid present to the extent of 51–55%. Tartaric, citric, and malic acids are present in small quantities and have been detected by using 6 mMsulfuric acid as the mobile phase with a flow rate of 1.0 mL/min and UV detection at 210 nm.