IN, In or in may refer to:
The International Standard Book Number (ISBN) is a unique numeric commercial book identifier.
India, officially the Republic of India (Bhārat Gaṇarājya), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country (with over 1.2 billion people), and the most populous democracy in the world.
Indonesia ( IN-də-NEE-zhə or IN-doh-NEE-zee-ə; Indonesian: [ɪndonesia]), officially the Republic of Indonesia (Indonesian: Republik Indonesia [rɛpublik ɪndonesia]), is a unitary sovereign state and transcontinental country located mainly in Southeast Asia with some territories in Oceania.
The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.
The indigenous peoples of the Americas are the pre-Columbian peoples of the Americas and their descendants.
The Indian National Congress ( pronunciation ) (INC, often called Congress) is a broad-based political party in India.