Knowledge has always influenced the health behaviour of individuals. In India awareness about sexual health, sexual rights and related laws are often ignored. This lack of knowledge increases the risk of sexual health and behavioural issues among young adults. This study investigates the knowledge about sexual health, rights and laws related to adolescent health in college students of age 18-21 years in Thrissur. A questionnaire was distributed among 200 college students excluding students from the healthcare sector and the responses were collected. The result depicted that the knowledge of young adults regarding sexual health and related laws were poor. In questions about rights and laws males students performed better than female students. On the other hand, female students were more aware about health aspects. The primary source of the participants’ knowledge was social media and peers. It is evident that a proper education and communication about sexual health and laws is necessary to avoid high risk behaviors.