Sperm morphology is given in detail with the help of 9 well illustrated diagrams and pictures. WHO criteria (1987, 1992) for sperm morphology, strict criteria for sperm morphology, morphological defects of sperms, sperm morphology, normal and abnormal sperms are given in detail. Giant sperm, double head sperm, micro sperm, double body sperm, long head sperm and middle piece defect sperm are described comprehensively.