A field experiment was conducted with 16 different bitter gourd (Momordica charantia L.) hybrids in the Department of Horticulture, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Puducherry, to study the extent of variability, heritability and genetic advance for various yield and yield contributing characters during rabi Summer 2021. Analysis of variance revealed the presence of significant differences for all the characters studied. The phenotypic coefficient of variation observed was found greater than the genotypic coefficient of variation for almost all the characters studied with the highest phenotypic coefficient of variation (PCV) recorded for fruit yield vine-1 (50.28), followed by number of fruits vine-1 (47.21) and weight of individual fruit (40.34). High heritability was also observed for all the characters studied, while the genetic advance as per cent of mean was high except for days to final harvest, which was found to be of moderate level. High heritability coupled with high genetic advance of most characters studied indicated the predominance of additive gene action thus providing the best opportunity for exercising selection.