| OJT | On-the-Job Training |
| TTT | Teleteaching and Training |
| ATI | Andromeda Training, Inc |
| WBT | Web Based Training Web-basierte Ausbildung/ Übung |
| ARP | Anti Revolutionäre Partei |
| AVK | Anti-Viren Kit [engl.] |
| ADK | Anti-Doping Kommission Organisation des Deutsche Sportbundes [DSB] |
| MSAV | Microsoft Anti Virus |
| ABS | Anti-Blockier-System |
| ATQ | Ausbildung Training Qualifizierung EU-Projekt zur Förderung berufstätiger Arbeitnehmer |
| TTI | Teaching, Training, and Information |
| ATS | Advanced Training Solution |
| ACT | Advanced Communication for Training |
| UMT | Universal Military Training |
| MAT | Mentales Aktivierungs-Training |
| IBT | Internet Based Training |
| CTB | Computer Based Training |
| CVT | Continuing Vocational Training Betriebliche Weiterbildung |
| OTS | Officers' Training School |
| OLAF | Office de la lutte anti-fraude [frz.] Amt für Betrugsbekämpfung |
| BAL | British Anti-Levisite [engl.] Kreuzgas-Gegenmittel |
| ATEX | Anti-Terrorism Exercise [engl.] Anti-Terror-Übungen |
| AAGB | Arbeitskreis Anti Graffiti Berlin |
| ASW | Anti-Submarine-Warfare [engl.] Militärflugzeug extremer Reichweite |
| ANTI-MoBB | ANTI Mobbing - Bullying - Bossing e.V. Ahrensfelde, http://www.anti-mobb-ev.de |
| ABM | Anti Ballistic Missile [engl.] Bodengestütztes Abwehrsystem |
| ADL | Anti-Defamation League [engl.] Amerikanische Liga zur Unterbindung der Diffamierung von Juden |
| SITC | Sustainable Internet Training Center |
| CATC | Cisco Academy Training Center |
| ROTC | Reserve Officers' Training Corps |
| ECET | European Centre for Education and Training |
| UCLAF | Unité de coordination de la lutte anti-fraude Dienststelle zur Koordinierung der Betrugsbekämpfungsmaßnahmen |
| AVAR | Anti-Virus Asia Researcher [engl.] Organisation zur Bekämpfung gegen Computerviren |
| ASTA | Anti-SPAM Technical Alliance [engl.] |
| ASTA | Anti Spam Technical Alliance [engl.] |
| CARS | Coherent Anti-Stokes Raman Spectroscopy |
| CARO | Computer Anti-Virus Research Organization |
| AAFC | Anti-Aircraft Fire Control [engl.] Flugabwehrfeuer |
| ASTF | Anti-SPAM Task Force [engl.] |
| ASWP | Anti-Submarine Warfare Prop [engl.] Propeller-Flugzeugtyp |
| ASTD | American Society for Training and Development [engl.] http://www.astd.org |
| BEST | Borland Enhanced Support and Training [engl.] Firmenbezeichnung für verbesserte Unterstützung und Schulung |
| AATP | Authorized Academic Training Provider [engl.] Microsoft-Programm zur Unterstützung bei der MS-Office-Ausbildung |
| cbt | Computer Based Training Lernprogramnm-Datei eine Dateiendung |
| CITAB | Computer Instruction and Training Assistance for the Blind |
| EICAR | European Institute of Computer Anti-Virus Research |
| ICARE | ISO 9000 on-demand, Consulting And Remote Electronic training |