An Investigation on “Evaluation of underutilized leafy vegetables for yield and nutritional value” was conducted at Horticultural College and Research Institute, Periyakulam, TNAU during 2018- 2019 to determine the performance of underutilized leafy vegetables for growth, foliage yield and their nutritional content. Fifteen underutilized green vegetables used by the native people were collected and studied for their development, yield, and nutritional parameters. The results showed significant variations for different characters. The highest fresh foliage yield was registered in the Alternanthera bettzickiana. Ascorbic acid content was highest in Acalypha indica with lower fiber content. Carotenoid content and sodium content were recorded maximum in Hibiscus cannabinus. Total phenolic content was detected highest in G13 Sauropus androgynus. Potassium and copper content was showed a maximum in Cardiospermum halicacabu. Magnesium and manganese content was noticed highest in Talinum fruticosum. Zinc and calcium content was registered maximum in G15 Solanum trilobatum. Iron content was observed maximum in Alternanthera sessilis