A fast, simple RP-HPLC and three spectrophotometric methods based on classical least squares (CLS), principle component regression (PCR) and pania11east squares (PLS) calibrations were developed for sitmultaneous estimation of ramipril (RAMP) and atorvastatin calcium (ATOR) in formulations. The HPLC assay utilized Phenomenex-Luna RP C-18 (2) 250 x 4.6 mm 5μm column with mobile phase composition of acelonitrile: 0.1M sodium perchlorate (pH 2.5) (70:30, v/v), and flow rate of 1.5mL/min with UV detection at 210nm. Chcmometric calibrations were constructed by using absorption data matrix corresponding to concentration data matrix, with measurements in the range of 201-270nm (Δλ= 1nm) in their zero-order spectra using 25 samples in training set. The chemometric numerical computations were realized using novel R-Software Environment (version 2.1.1). Reliability of predictions was validated for various ICH regulatory parameters. Both the results of proposed chemometric methods and that of proposed chromatographic method were compared and good agreement was found. Laboratory prepared mixtures and commercial tablet formulations were successfully analyzed by the developed methods.