IN, In or in may refer to:
The International Standard Book Number (ISBN) is a numeric commercial book identifier which is intended to be unique.
India (IAST: Bhārat), also known as the Republic of India (IAST: Bhārat Gaṇarājya), is a country in South Asia.
Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.
Indonesia ( (listen) IN-də-NEE-zhə, -zee-ə; Indonesian: [ɪndoˈnesia]), officially the Republic of Indonesia (Indonesian: Republik Indonesia [reˈpublik ɪndoˈnesia]), is a country in Southeast Asia, between the Indian and Pacific oceans.
The Internet (contraction of interconnected network) is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.
The Indian National Congress (pronunciation ) (INC, often called the Congress Party or simply Congress) is a broadly based political party in India.
Instagram (also known as IG or insta) is a photo and video-sharing social networking service owned by Facebook, Inc.
The indigenous peoples of the Americas are the Pre-Columbian peoples of North, Central and South America and their descendants.