Tomato is a major vegetable grown during the rainy and winter seasons in the mid-western plain (Terai) region of Nepal. A major production constraint is the high postharvest losses, estimated at about one-fourth of the total production. This problem is usually more serious during peak production when there is greater supply of tomatoes but at very low price. Processing to produce value-added products could be a vital strategy to reduce losses and increase profitability. Nepal has no dedicated effort to develop processing tomato varieties. This study evaluated eight processing tomato advanced lines from AVRDC - The World Vegetable Center (UC204A, CLN3552B, CLN3125L-5x55, CLN3669A, CLN3682C, CLN3552B, CLN3670B and Tanya) and a local cultivar ('Pusa Ruby') under field conditions at Nepalgunj, Banke, Nepal, from September 2014 to March 2015. CLN3552B produced the highest fruit weight (102 g fruit-1), total soluble solids (5.4 °Brix), titratable acidity (2.1%) and pH (6.8). Highest fruit yield was obtained in CLN3669A (41 t ha-1), which also showed the lowest incidence of late blight and tomato yellow leaf curl virus diseases. The local control had the highest ascorbic acid content (31.1 mg 100 g-1) and paste recovery (14%). The results showed that the AVRDC advanced lines had multiple desirable traits (high yield, disease resistance and physiochemical quality attributes) that can be harnessed for the food processing industry. CLN3669A, CLN3552B, UC204A and CLN3125L-5X65 were the more promising lines that can be further tested in advanced yield trials.