A study was conducted to assess the knowledge regarding menstruation and its hygiene among adolescent girls at K.L.E’s Institute Of Nursing Sciences, Hubballi. Twenty eight (28) students were selected by non probability; purposive sampling technique. The knowledge was assessed by using structured knowledge questionnaire. The study results revealed that in Pre test majority of subjects 17 (60.71%) had average knowledge, 6 (21.42%) had good knowledge and 5 (17.85%) had poor knowledge respectively, where as in Post test all the subjects 28 (100%) had good knowledge about the menstruation and its hygiene.

Keywords: Knowledge; Menstruation.