Disability is a vulnerable group in developing countries. India is one of the developing countries and has the largest population next to China. In India, we can see most feebler sections appear, particularly unsound mind persons or mentally ill persons. They are always kept in a corner and face discrimination in all the sectors. They are invisible, and no one gives value to them. They are excluded in every area, such as politically, socially, economically, legally even sexually also. They do not have the right to marry, adoption, and the right to reproduction. Even the legal system is also not protecting them. In this article, the author describes the various factors connecting to sexuality.