Adolescence is a transition period from childhood to adulthood. In this period one of the major physiological changes that takes place in the adolescent girls is the onset of menstruation. Good menstrual hygiene is crucial for the health and dignity of girls and women. The present study was aimed to assess the knowledge and reported practices of menstrual hygiene among adolescent girls of selected Government College, Parade, Jammu (J&K). The sample consisted of 50 adolescent girls. Purposive sampling technique was used to select the sample. Socio-demographic profile and self-structured questionnaire was used to assess the level of knowledge and practice regarding menstrual hygiene among adolescent girls. The study concluded that the knowledge among adolescent girls was good and practices used them were satisfactory. There is need to increase knowledge regarding menstrual hygiene and make adolescents practice good hygiene habits to prevent various pelvic infections and diseases.