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IP (complexity) or Interactive Polynomial-time, a particular complexity class of languages that have interactive proofs

IP address (Internet Protocol address), a computer network address

Ip, Sălaj, a village in Romania

Image processing

Innings pitched, a pitcher's statistic in baseball

Ingress protection rating for electrical equipment (e.g., IP20)

Instruction pointer, or program counter in computer processing

International Protection, or degree of protection IP (International Protection)

Internet Protocol, the computer networking protocol used on the Internet

Internet protocol suite or TCP/IP protocol suite, Internet communications protocols

ip (struct), a C structure used to construct an Internet Protocol header

Intellectual property: the legal concept that the works created with intellectual effort is a form of property

Internet service provider or Internet provider

Integrated Project: an instrument to support objective-driven research, within european research activities.

Ingress protection rating, safety rating of electrical equipment

Iraqi Police

Integrated production, natural farming

Incontinentia pigmenti, a genetic disorder

Insolvency practitioner, a specialist in formal insolvency cases

Independence Party of Minnesota, a political party in Minnesota

Inflection phrase, in syntax

Clipperton Island (FIPS territory code)

Integer programming, a special case of Linear programming

Atyrau Air Ways IATA airline designator