The present investigation was conducted on heterosis for growth and yield attributing characters in ridge gourd. Forty five F1 hybrids were generated by half diallel (excluding reciprocals) mating design. These F1 hybrids along with ten parents were evaluated in Randomized block design with two replications at College farm, College of Horticulture, Venkataramannagudem during rabi, 2018. Observations were recorded for five randomly selected and tagged plants from each treatment for growth and yield attributing characters viz., days to first male and female flower appearance, node number at which first male and female flower appear, sex ratio, internodal length, days to first fruit harvest, number of fruits per vine, fruit length, fruit diameter, average fruit weight, fruit flesh thickness, number of seeds per fruit, fruit yield per vine. The values of F1 hybrids averaged over two replications were used for estimating heterosis. The top four heterotic cross combinations viz., VRG-24 x VRG-13, VRG-24 x VRG-16, Swarna Manjari x Arka Prasan and Swarna Manjari x VRG-16 were identified as promising for fruit length, average fruit weight and fruit yield per vine.