Twenty six diverse cultivars of maize in a Completely Randomized Block Design (CRBD) at AKS University, Satna, during Rabi season on November 2020. The twelve quantitative characters studied, data were collected and estimated for variance, genetic variability, heritability and genetic advance. The design of the experiment indicated highly significant differences for all the characters due to treatments. The analysis of variance of twenty six genotypes of maize and indicated the existence of sufficient amount of variability among genotypes for all the studied characters. PCV was higher than GCV for all the studied characters. The maximum GCV and PCV was observed for cob height and number of kernel per row. High heritability (h2 b) >80% were observed for Day to 50% pollen shedding (98.00%) and Day to maturity (94.50%) suggested that the characters are influenced by the environmental factors in very less amount and also indicates the dependency of phenotypic expression which reflect the genotypic ability of strains to transmit the gene to their progenies. High heritability coupled with high genetic advance was found for characters kernel per cob, cob height and grain yield/plant which indicated that these characters are governed by additive type of gene action.