ABSTRACT: Sigmoid volvulus is a life threatening condition requiring urgent detorsion of the twisted bowel. This condition is more common in elderly males.3 Etiology is multifactorial and controversial. Volvulus is likely to occur as a consequence of lengthening of sigmoid mesocolon, secondary to gradual elongation of sigmoid colon loop.9 This sigmoid elongation may be due to prolonged periods of immobilisation or inhibition of colonic motility by certain drugs. In younger population, sigmoid volvulus is more often associated with megacolon and its etiologies, most often being Hirschsprung disease or Chagas disease.10 We here report a case of Sigmoid volvulus in a 25year young gentleman associated with megacolon, etiology being Crohn’s colitis which is very rare. Summary: Volvulus of the sigmoid colon is a surgical emergency requiring prompt diagnosis and management.