A stateless person is someone whom no country considers a national under its law. Without a nationality, people are often unable to go to school, see a doctor, work legally, open a bank account, rent housing, marry or travel, and the exclusion can last a lifetime, from birth to the lack of a death certificate. UNHCR reported 4.5 million stateless people at the end of 2025, but says the true number is likely much higher because many stateless populations are unregistered and invisible to official statistics. Approximately half of all countries, including many with known stateless populations, have no data on stateless people at all.
Statelessness is mostly caused by laws and policies, not by chance. Most known stateless populations belong to minority groups excluded on grounds of ethnicity, religion or language; the largest group, the Rohingya of Myanmar, numbers 1.8 million people, 41% of the reported global total. Gaps between countries' nationality laws, new borders and the loss or deprivation of nationality also leave people stateless. Gender discrimination is a major cause of statelessness in childhood: in 24 countries a mother cannot pass her nationality to her children on the same terms as a father, so a child can be left stateless when the father is stateless, unknown, has died or cannot or will not complete the paperwork.
How statelessness is defined and counted
Statelessness is about nationality in law, which makes it different from missing documents. A person can hold a birth certificate and still be stateless, and a person without any papers may still be a national of a country. The legal-identity challenge on this site covers birth registration and ID; this page covers people whom no state recognises as its own. Four elements shape the figures:
The legal definition
The 1954 Convention relating to the Status of Stateless Persons defines a stateless person as someone not considered a national by any state under the operation of its law. What counts is how nationality law is applied in practice, not whether a person has documents.
Undocumented is not the same as stateless
A missing birth registration can put a child at risk of statelessness, for example when parentage or place of birth cannot be proven, but most undocumented people do have a nationality. Fixing documentation and fixing nationality need different remedies.
What UNHCR counts
UNHCR compiles statistics that states share on stateless people and people of undetermined nationality, together with its own data. The global figure is the sum of what is reported, so it is a minimum and depends on which countries report. Data were submitted by 101 states for the end of 2024.
Overlap with displacement
About 1.6 million stateless people are also forcibly displaced, most of them Rohingya. In UNHCR's total of people it protects or assists, they are counted only once, as displaced, so they are not added a second time as stateless.