The present study was conducted to study the Study Habits and Academic Achievement of Adolescents girls in Jammu and Kashmir. 400 sample subjects were selected randomly from two ethnic groups’ viz. Kashmiri and Ladakhi. The investigators used Palsane & Sharma’s study habits inventory (PSSHI) to collect data from the field. Certain statistical techniques like percentage, S. D., Mean and t-value were used to analyze the data. The result confirms Significant mean difference were found between Kashmiri and Ladakhi adolescents on their study habits and academic achievement.