The present paper describes the morphology and morphometry of Haemonchus contortus (Rudolphi, 1803) Cobb, 1898, a roundworm parasitizing sheep and goat. External morphology of male and female worms alongwith measurements of important body parts is studied. Cervical papillae, longitudinal cuticular ridges, buccal lancet, spicules, bursal rays, gubernaculum, excretory pore, genital openings of male and female worms, anal aperture and size of various body organs was analysed for morphometric characteristics.