Amputee, a person who has had one or more limbs removed from their body

Amplifier, a piece of electronic equipment that increases the power of a signal

Guitar amplifier, a device used with electric guitars

Advanced Mobile Phone System, a first-generation analog cellular technology used in the Americas

Ameriprise Financial (stock symbol: AMP), a finance company that was spun off from American Express in 2005

Ampere (A), the SI unit of electrical current

Amp (band), the alternative experimental rock and electronic band

AutoMag (pistol), an automatic Magnum pistol

Antimicrobial peptides, groups of peptides in the immune system that are capable of killing bacteria

Adenosine monophosphate, a nucleotide found in RNA

Australian Music Prize, an annual music award given to an Australian artist

Amplified Bible, a translation of the Bible that uses punctuation to reproduce the meanings and emphases present in the original texts

Air Member for Personnel, a senior appointment in the Royal Air Force

AMP Limited, an Australian financial services company

Amp (TV series), an electronica music video television show on MTV

Americans for Medical Progress, a charity that aims to protect and advocate for society's investment in medical research

Ampoule, a medical container

Advanced Manufacturing Park, a manufacturing technology park in the United Kingdom

Alliance pour la majorité présidentielle, a political platform in the Democratic Republic of Congo

AMP Radio Networks, a Malaysian-based radio company

Mountain Dew AMP, an energy drink made by PepsiCo

Adventures in Motion Pictures, a UK ballet company

AMP Inc., a manufacturer of electrical and electronic connectors, now part of Tyco Electronics, or the name brand of such connectors. "AMP" stood for "Aircraft and Marine Products" but after the product line was diversified, the firm became simply "AMP Incorporated"

AMP, an MP3 decoding engine used by both Winamp and Napster

Apache, MySQL, PHP

LAMP (Linux) or WAMP (Windows), common software suites for Web development

amp (&), the XML/HTML character entity reference for the ampersand character

AMP,Average Manufacturer Price, a refereance drug price calculated by Centers for Medicare and Medicaid Services. It is based on data provided by pharmaceutical manufactures. This value is used to calculate Medcaid Drug Rebates paid to state Medicaid programs.