The present investigations entitled “Heterosis, combining ability and gene action for fruit yield and quality traits in bottle gourd (Lagenariasiceraria (Mol.) Standl.)”were conducted during the zaid seasons of 2022-23 and 2023-24 at the Main Experiment Station (MES) of the Department of Vegetable Science, A.N.D. University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India. The experimental materials of the present investigation comprised of 43 genotypes including (30 F1’s, 10 lines and 3 testers) and evaluated in Randomized Block Design (RBD) with three replications having each experimental unit with spacing of 3.0m × 0.50m with plot size of 3.0m × 3.0m. The observations were recorded for Twenty characters. Sowing was done on 24February, 2022-23 and 22February, 2023-24. Evaluation was done for different yield and quality traits. High heritability coupled with high genetic advance were observed for fruit length (cm), reducing sugar (%), Non-reducing sugar (%) and dry matter content in fruit (g/100g) indicating that most likely that heritability is due to additive gene effects and selection may be effective.