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Cephalometrics for Orthognathic Surgery (COGS) parameters of hard and soft tissue of one state population in India cannot be applied to another group. So, it becomes necessary to understand the cephalometric norms in populations of different state. The aim of the study was to determine the hard tissue cephalometric norms for orthodontic sequency applicable to the population of Madhya Pradesh using HP plane as reference plane. The study was conducted in Department of Orthodontics and Dentofacial Orthopaedics, Mansarovar Dental College, Hospital and Research Centre, Bhopal. The present analysis was made on lateral cephalograms. Horizental Plane (HP) is used as base line for comparison of most of the data in this analysis. The cephalometric norms for orthognathic surgery were done on 130 Class I patients. The mean values for the COGS analysis was significantly different from the normal. There were significant difference in the COGS value for both males and females. These values were recommended for use in the orthognathic surgery done on the central Indian population. The cephalometric norms for orthognathic surgery found in the study done on central Indian population were significantly different than the norm of the Caucasian population. The norms for the Indian population are taken into account during orthognathic treatment planning.