ACP

ACP is an acronym that can refer to several organizations, concepts, and terms across different fields. The following are among the most common meanings of ACP.

American College of Physicians (ACP) is a United States professional medical association for internists. Founded to advance the science and practice of internal medicine, it publishes the peer‑reviewed Annals of Internal Medicine and provides medical education, guidelines, and advocacy to support high‑quality patient care.

Acyl carrier protein (ACP) is a small acidic protein essential to fatty acid biosynthesis in bacteria and plants. In type II fatty acid synthase systems, ACP transports growing acyl chains via a 4'-phosphopantetheine prosthetic group attached to a serine residue, enabling chain elongation. ACP also participates in polyketide biosynthesis in some organisms.

Advance care planning (ACP) is the process of discussing and documenting preferences for future medical treatment in the event of serious illness or loss of decision‑making capacity. It often involves conversations with clinicians and family members and may result in advance directives or designation of a health care proxy to guide care decisions.

Association of Chess Professionals (ACP) is an international organization representing professional chess players. It aims to improve working conditions for players, organize events, and advocate for compensation and rights within the sport.

Automatic Colt Pistol (ACP) is a designation used in firearms literature for the pistol cartridge family designed by John Browning, most notably the .45 ACP cartridge. The term indicates the Automatic Colt Pistol lineage rather than a model name alone.