Not AvailableThe Calibration Approach proposed by Deville and Särndal (1992) is a popular technique to efficiently use auxiliary information in survey sampling. In this study, calibration estimators of the finite population total have been developed under two stage sampling design along with variance of the estimator and the corresponding estimator of variance. It is assumed that the population level complex auxiliary information is available at the second stage of selection and the study variable is inversely related to the available auxiliary information. The proposed calibration estimators were evaluated through a simulation study and it was found that all the proposed product type calibration estimators perform better than the Horvitz-Thompson estimator as well as usual product estimator of the population total under two stage sampling design