Tomato (Lycopersicon esculentumMill.) is one of themost popular and widely grown vegetable in the worldranking second in importance only next to potato inmany countries and ranked 1stin preserved and processedvegetables. Information on genetic diversity among availablegenotypes is essential for development of promising variety(Balashet al.,1984) and on the other hand, information on natureof total phenotypic variability together with the magnitude ofheritability for any given quantitative characters underimprovement is of utmost importance to the breeder to proceedtowards fruitful hybridization programme. Yield improvementwould be facilitated only when genetic diversity exists in thematerial chosen for improvement. The genotypic and phenotypicco-efficients of variation are useful in detecting amount ofvariability present in the available genotypes. Heritability andgenetic advance help in determining the influence of environment in expression of the characters and the extent towhich improvement is possible after selection. Hence, thestudy was conducted to quantify the variability in tomatogenotypes for yield and its related characters.