Intellectual property, an umbrella term for various legal entitlements which attach to certain names, written and recorded media, and inventions

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

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

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

Iraqi Police

Clipperton Island (FIPS territory code)

Isoelectric point, pH where a chemical molecule carries no net charge

Intra-Peritoneal, an anatomical/medical descriptor

Integrated Programme, a specialized education route in Singapore

Internet Protocol, the computer networking protocol used on the Internet

Independence Party of Minnesota, a political party in Minnesota

Inter-Phalangeal, an anatomical/medical term

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

Infundibulopelvic (ligament)

Atyrau Air Ways IATA airline designator

Image processing

Incontinentia pigmenti, a genetic disorder

Innings pitched, a pitcher's statistic in baseball

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

A variation of Yip, a Chinese surname

Insolvency practitioner, a specialist in formal insolvency cases

Instruction pointer, or program counter in computer processing

Ion plating, an especial way to plate a surface.

Induced polarization, a geophysical imaging technique

Integrated production, natural farming

Information professional, a professional dealing with information, such as a librarian, network administrator or database administrator

Ip, Sălaj, a village in Romania

Independent Party

Inflection phrase, in syntax

IndustryPack, Standard cPCI or VMEbus carrier module which can take PCI mezzanine cards often used for IO