INC can refer to:
- Ijaw National Congress, a representative body formed in 1991 of Ijaw speaking people
- Incorporation (business), abbreviated "Inc." or "inc." in corporation names
- Indian National Congress, one of the two major political parties in India
- Indian National Council, an organisation founded in December 1941 in Bangkok by Indian Nationalists residing in Thailand
- Iraqi National Congress, an umbrella Iraqi opposition group led by Ahmed Chalabi
- National Institute of Culture of Peru
- Iglesia ni Cristo, an indigenous Christian religious organization originating in the Philippines
- International Network of Crackers, a major warez organization during the early 1990s
- The (International) Noise Conspiracy, a Swedish rock band
- Inc. (magazine), a business magazine
- INC, an instruction in some assembly languages
- International Concepts, a fashion label owned by Macy's Inc.