A sensitive and simple high performance liquid chromatographic method for the assay of fluoxetine HCl was developed. The procedure is based on the use of the reversed-phase high performance liquid chromatographic method with UV detector. Each analysis required no longer than 6 minutes. The detector response was linear in the range of 0.01–50 μg/mL for fluoxetine HCl. The detection limit was found to be 0.0057 μg/mL. There was no significant difference between interday and intraday studies for fluoxetine HCl determined for two different concentrations. This method was applied, without any interferences from the excipients, for the determination of the drug in capsules and in drug dissolution studies. This method can be useful in routine quality control analysis of fluoxetine HCl pharmaceutical dosage form.