The experiment was carried out to study the broad-sense heritability and genetic advance for some morphological and physiological traits in rice influenced by heat stress. A split plot design was used in this study with 16 rice varieties were arranged as sub plot with two heat stress range: 37-38^oC and 40-41^oC as the main plot with three replications. The observed morphological and physiological traits were tiller number, leaf number, plant height, root length, root fresh weight, root dry weight, shoot fresh wight, shoot dry weight, leaf area, proline content at the vegetative stage, number of sterile pollens, stomatal density, chlorophyl content, and 1000 seed weight. There was a high coefficient of variation for most traits observed in the experiment. The phenotypic variances of the observed variables were greater than those of the genotypic variances. This finding was in line with the trends of their phenotypic co-efficient of variances compared to genotypic co-efficient of variances. The broad-sense heritability values were high for all observed traits, except moderate for number of sterile pollens. The higher the heritability, the better a trait can be inherited into the next progenies. The genetic advances were varied from low to high for all observed traits.