Overseas Citizenship of India (OCI) is a form of permanent residency available to people of Indian origin and their spouses which allows them to live and work in India indefinitely. It allows the cardholders a lifetime entry to the country along with benefits such as being able to own land and make other investments in the country.

Permanent residency is a person's legal resident status in a country or territory of which such person is not a citizen but where they have the right to reside on a permanent basis. This is usually for a permanent period; a person with such legal status is known as a permanent resident. In the United States, such a person is referred to as a green card holder but more formally as a Lawful Permanent Resident (LPR).