The present investigation was conducted at the field of the Horticulture college and Research Institute, Tamil Nadu Agricultural University, Periyakulam during 2011-12 to study the nature and magnitude of genetic diversity of 34 moringa ecotypes collected from Southern districts of Tamil Nadu. Study on genetic diversity of 34 moringa ecotypes of on the basis of morphological parameters was conducted. From the D2analysis under Tocher's method, seven clusters were formed representing the genetic diversity among the genotypes studied. Cluster I topped in having twelve numbers of genotypes among clusters formed, whereas cluster VI having ten genotypes and VI cluster having one genotype. Average intra and inter cluster distances in studied genotypes showed range from 0.00 to 19.97. It means the cluster posses highest intra cluster distance D= 19.97 which includes ten genotypes and maximum average inter cluster distance was observed between II and VII (31.38) and VI and VII (30.54).