IP is the usual abbreviation for Internet Protocol. It is also a common abbreviation for different things in different fields.

IP may refer to:

Science and technology

Biology

• Immunoprecipitation, an antibody-based protein extraction technique
• Isoelectric point, pH where a chemical molecule carries no net charge
• Infundibulopelvic (ligament)
• Incontinentia pigmenti, a genetic disorder
• Intra-Peritoneal, an anatomical/medical descriptor, or intraperitoneal injection
• Inter-Phalangeal, an anatomical/medical term

Chemistry

• Immunoprecipitation, an antibody-based protein extraction technique
• Ion plating, an especial way to plate a surface.

Computer science

• Instruction pointer, or program counter in computer processing
• Integer programming, a special case of linear programming
• Interactive Polynomial-time, a particular complexity class of languages that have interactive proofs
• Internet Protocol, the computer networking protocol used on the Internet
• Internet protocol suite or TCP/IP protocol suite, Internet communications protocols
• IP address (Internet Protocol address), a computer's network address
• ip (struct), a C structure used to construct an Internet Protocol header

Medicine

• Idiopathic Parkinsonism, Parkinsonism, or Parkinson's Disease, where the cause of the disease is unknown

Other

• IP Code, (International Protection) an international standard rating for the protection of electrical equipment against accidental contact and the ingress of dust and water.

Geography

• Clipperton Island (FIPS territory code)
• Induced polarization, a geophysical imaging technique
• Ip, S?laj, a village in Romania

Humanities

Language

• Inflection phrase, in syntax

Law

• Insolvency practitioner, a specialist in formal insolvency cases
• Intellectual property, an umbrella term for various legal entitlements which attach to certain names, written and recorded media, and inventions
• Imperial Police, the former name of the Indian Police Service in British India.

Politics

• Independence Party of Minnesota, a political party in Minnesota
• Independent Party

Other

• Information professional, a professional dealing with information, such as a librarian, network administrator or database administrator
• A variation of Yip, a Chinese surname
• Integrated project, an instrument to support objective-driven research, within European research activities
• Integrated Programme, a specialized education route in Singapore
• Iraqi Police
• International Paper, a world leader in pulp and paper making/distribution

Other

• Atyrau Air Ways IATA airline designator
• Image processing
• Innings pitched, a pitcher's statistic in baseball
• Integrated production, natural farming

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