ATP may refer to: Companies and organizations Association of Tennis Professionals, men's professional tennis governing body American Technical Publishers, employee-owned publishing company , a Danish pension Armenia Tree Project, non-profit organization Association for Transpersonal Psychology ATP architects engineers, architecture- and engineering office for integrated design ATP Oil and Gas, defunct US energy company Entertainment, arts and media Adenosine Tri-Phosphate (band), Japanese alternative rock/pop band All Tomorrow's Parties (festival), UK organisation ATP Recordings, record label Alberta Theatre Projects, professional, not-for-profit, Canadian theatre company Associated Talking Pictures, former name of Ealing Studios, a television and film production company Science, technology and biology Adenosine triphosphate, an organic chemical used for driving biological processes Advanced Technology Program, US government program Anti-tachycardia pacing, process similar to a pacemaker Alberta Taciuk process, for extracting oil from shale, etc. Automated theorem proving, method of proving mathematical theorems by computer programs Transport British Aerospace ATP, airliner Airline transport pilot license ATP Flight School, US ATP (treaty), UN treaty that establishes standards for the international transport of perishable food Aitape Airport, Papua New Guinea, IATA code Automatic train protection, system installed in trains to prevent collisions through driver error Automatic Train Protection (United Kingdom), method of beacon based railway cab signalling Other uses Available-to-promise, responding to customer order enquiries Around-the-post, a term used in the game of pickleball