Gladiolus is one of the prime cut flower which occupies eight position in global trade among the cut flowers. To bring the gladiolus cultivation under commercial scale in coastal Tamilnadu condition it is imperative to identify suitable varieties. Hence, a field experiment was conducted in Randomized Block Design with two replications in Department of Horticulture, Annamalai University, during 2017-2018 to find out the suitability of twenty five gladiolus varieties for their growth, flowering, spike yield and corm yield characters under coastal region of Tamil Nadu. The results revealed that there were significant difference among the varieties with respect to vegetative parameters, flower and corm yield. Among all varieties, Sarala and White friendship were found performing better with highest growth, flowering and yield parameters. The maximum dry matter production was recorded in Sarala (37.61g plant-1) followed by White friendship(36.48g plant-1) and guvari (36.12g plant-1) and the minimum dry matter production was recorded in Hunting Song (11.60 g plant-1). Significantly highest spike length (95.41cm) and rachis length (54.94cm) were recorded in cultivar 'Sarala' followed by White friendship and Guvari. However, the maximum of one marketable spike yield per plant was observed in the cultivars Sarala, White Prosperity, Guvari and White friendship. The maximum number of (1.50) corms per plant was recorded in 'Sarala' and Guvari while many cultivars viz., Hunting Song, Green Star, Nova Zembla, Purple Flora, Adagio, Karma, Apollo, Morallo and Yellow star have produced only one corm. It could be concluded that the gladiolus varieties Sarala, White friendship and Guvari were found suitable for the coastal region of Tamil Nadu.