IB
IB, Ib or ib may refer to:
Organizations
Business
- Iberia (airline) (IATA airline code)
 - Information Builders, a software firm
 - International Bank (Liberia)
 - International business
 - Investment banking
 - Internet Brands
 - Interstate Batteries
 - Intrapreneurial Bricolage
 
Intelligence
- FBI Intelligence Branch, the United States Federal Bureau of Investigation's branch in charge of intelligence analysis
 - Intelligence Bureau (India), the domestic intelligence organization of India
 - Intelligence Bureau (Pakistan), the domestic intelligence organization of Pakistan
 - IB, a defunct intelligence agency within the Swedish Army involved in the IB affair
 
Other
- The International Baccalaureate, an educational program
 - Intervention Board for Agricultural Produce, a former British government department
 
Science and technology
- Inclusion bodies, nuclear or cytoplasmic aggregates of stainable substances, usually proteins
 - Ion beam, a type of charged particle beam
 - I b or I-b, a subtype of Type I supernova; see Type Ib and Ic supernovae
 - IB printing, a Technicolor concept
 
Computing
- InfiniBand, a type of computer network technology
 - Infinite baffle, in loudspeaker enclosure design
 - Information behavior, a subdiscipline within the field of library and information science
 - Interface Builder, a user interface design application on Mac OS X that is part of Xcode
 - Invision Power Board, Internet forum software written in PHP
 
Medicine
- Ibuprofen, a non-steroidal anti-inflammatory drug
 - Investigator's brochure, a document summarizing pharmacological information about an investigational product
 
Places
- Ib railway station, a station in the Indian Railways system
 - Ib River, a river in India
 - Ib Thermal Power Station, near Jharsuguda, Odisha, India
 - Ibb Governorate (also spelled "Ib"), Yemen
 - International border
- India–Pakistan border or International Border
 
 - Imperial Beach, California, United States
 - Ingleby Barwick, a town in North Yorkshire, England
 
Arts and entertainment
- Ib (video game), a 2012 video game
 - The Ib Award, presented occasionally by the Danish Film Academy
 - Ib, a variant of the language game Ubbi dubbi
 - Ib, a fictional ancient city in H. P. Lovecraft's story "The Doom That Came to Sarnath"
 - Ib, a title character of Ib and Little Christina, a Hans Christian Andersen fairy-tale
 
People
- Ibrahim Hussein (artist) (1936–2009), Malaysian artist
 - Ingrid Burley (born 1986), American rapper
 
Other uses
- Ib., abbreviation for Latin ibidem ("in the same place") used in references
 - Ib (given name), a Danish male first name
 - Ib (cuneiform), a common-use sign in the Epic of Gilgamesh and other cuneiform texts
 - Ib, "heart", an Ancient Egyptian concept of the soul or spirit
 - Intelligent building, a type of building
 - Inward Bound, an Australian National University sporting event
 - Itinerarium Burdigalense, the oldest known Christian itinerarium
 - Issue Brief, a type of Congressional Research Service Report