Arp

Arp or ARP may refer to:

People

• Halton Arp (born 1927), American astronomer
• Jean Arp (1886–1966), German-French artist
• Sophie Taeuber-Arp (1889–1943), Swiss artist
• Axel Rudi Pell (born 1960), German guitarist

Businesses and organizations

• Air Raid Precautions, a British civil-defence organisation (1924-1946)
• Alaska Republican Party, the local branch of the Republican Party in the state of Alaska
• American Recording Productions, an Armenian and Middle Eastern traditional music label
• Anti Revolutionaire Partij, a Dutch political party
• ARP (laboratory), a software-development group for digital humanities
• Associate Reformed Presbyterian Church

Music

• Arpeggiator, a feature found on sound synthesizers and virtual musical instruments
• Arpeggio, a broken chord in which notes are played or sung in succession rather than simultaneously
• ARP (band), consisting of Mark Rae and Rhys Adams
• ARP Instruments, Inc., early manufacturer of electronic music synthesizers

• ARP synthesizers, any synthesizer manufactured by ARP Instruments, Inc.

ARP (acronym)

• Area redevelopment plan, an urban planning tool provided in the Alberta Municipal Government Act
• Active Rollover Protection
• Address Resolution Protocol, a computer networking protocol
  • ARP spoofing, a networking attack on Address Resolution Protocol
• Airport Reference Point, the approximate geometric center of all usable runways
• Autoradiopuhelin ("car radio phone"), in Finland, the first commercially operated public mobile phone network

Other uses

• Arp, Texas
• Arp number, a numbering system for galaxies
• Arapaho language, a Native American language
• Arp2/3 complex, a protein
• Arp, a rosemary cultivar