People with disabilities are defined as those who have long-term physical, mental, intellectual or sensory impairments, which, in interaction with various obstacles, can prevent their full and effective participation in society on an equal basis with others. According to the estimates of the United Nations, disability among the population is becoming more and more widespread, so that at least one out of ten inhabitants of each country is to some extent a person with a disability. Society's attitude towards people with disabilities began to change in the 1950s, and from the 1990s, the rights of people with disabilities were emphasized and the need to respect them through international documents, the most significant of which is the Convention on the Rights of Persons with Disabilities from 2006. International sources of law include the right to marry as a model of a centuries-old heterosexual union between a man and a woman governed by custom and law. The Convention on the Rights of Persons with Disabilities guarantees all persons with disabilities of marriageable age the right to marry and to found a family on the basis of free and complete consent on an equal basis with others, and recognizes their right to freely and responsibly decide on the number of children and when they will have them, as well as the right to access information appropriate to their age and education related to reproduction and family planning, and the means to realize that right. The legal system of the Republic of Croatia, with the provisions on marriage in the Family Law, respects the requirements of the European Convention and the Convention on the Rights of Persons with Disabilities. On the other hand, it is important to approach the issue of exercising the right to marry for the persons with mental disorders deprived of business capacity very carefully and considerately, and only limit this right in exceptional cases.