The onset of menarche is part of physical and sexual maturity process. Previous studies have shown that the nutritional status of an adolescenst girl have important influence on the menarche age. The study was designed to determine the age of menarche and its relation to nutritional status of adolescent girls in SMP Negeri 10 Bulukumba. This was an analytical survey with a Cross Sectional Study approach. The sample in this study consisted of 74 people (total sampling), namely all students who had experienced menarche. The result of this study indicate that of the 74 respondents studied, there were 48 respondents had a good nutritional status, 43.75% had experienced normal menarche and 56.25% had experienced abnormal menarche. There were 26 respondents had a malnutrition, 15.38% had experienced normal menarche and 84.62% had experienced abnormal menarche. The results of statistical tests showed that there was an association between the nutritional status and the age at menarche of adolescent girls in SMP Negeri 10 Bulukumba (Pv=0,020; OR= 4,28). It is concluded that nutritional status is significantly associated with the age at menarche in adolesence. A good nutritional status in adolescent girls will experience puberty normally, resulting in normal and uninterrupted menstruation.