Abstract: The screening of thirty tomato varieties/lines to tomato fruit borer, Helicoverpa armigera (Hub.) infestation was conducted in relation to their morphological characters. The tomato fruit borer infestation varied significantly among the varieties/lines and also with the age of the tomato plants. Among the varieties/lines, V-29 and V-282 were found moderately resistant and susceptible respectively. Plant height, stem diameter, total number of branches/plant, total number of leaves/plant, 2nd leaf area, total leaf chlorophyll, number of leaf hair, number of fruits/plant of V-29 line were 81.74, 1.45 cm, 14, 453, 19.58 sq. cm, 1.13mg g-1, 12 and 48 respectively. Again the aforementioned characters for V-282 line were 80.74 cm, 1.18 cm, 9, 396, 21.57 sq. cm, 1.24 mg g-1, 17 and 30 respectively.