| Adriano Correia | Adriano Correia Claro |
| Adriano Duarte Mansur da Silva | Adriano Duarte Mansur da Silva |
| Adriano Emperado | Adriano Directo Emperado |
| Adriano Pereira | Adriano Pereira da Silva |
| Adriatique | Adriatic Sea |
| Adrie van Tiggelen | Adri van Tiggelen |
| Adrien | Adrian |
| Adrien Brody | Adrien Brody |
| Adrien de Cantorbéry | Adrian of Canterbury |
| Adrien de Gerlache de Gomery | Adrien de Gerlache |
| Adrien de Jussieu | Adrien-Henri de Jussieu |
| Adrien de Vries | Adriaen de Vries |
| Adrien Ier | Pope Adrian I |
| Adrien II | Pope Adrian II |
| Adrien III | Pope Adrian III |
| Adrien IV | Pope Adrian IV |
| Adrien Lachenal | Adrien Lachenal |
| Adrien V | Pope Adrian V |
| Adrien VI | Pope Adrian VI |
| Adrien-François Servais | Adrien-François Servais |
| Adrien-Marie Legendre | Adrien-Marie Legendre |
| Adrienne Monnier | Adrienne Monnier |
| Adrián Caetano | Israel Adrián Caetano |
| adroit | skillful |
| adroitement | capably |
| adrénal | adrenal |
| adrénaline | adrenalin |
| AdSense | AdSense |
| ADSL | ADSL |
| Adson de Montier-en-Der | Adso Dervensis |
| adsorbant | adsorbent |
| adsorption | adsorption |
| Aduatiques | Aduatuci |
| adulaire | moonstone |
| adulateur | adulator |
| adulation | adulation |
| adulation de soi-même | egotism |
| adulatoire | adulatory |
| adulatrice | adulator |
| Adulescence | Kidult |
| Adult Video News | AVN |
| adulte | mature |
| adultère | adulterer |
| adustion | cauterization |
| Advaita vedanta | Advaita Vedanta |
| Advance Australia Fair | Advance Australia Fair |
| Advanced Access Content System | Advanced Access Content System |
| Advanced Audio Coding | Advanced Audio Coding |
| Advanced Boolean Expression Language | Advanced Boolean Expression Language |
| Advanced Configuration and Power Interface | Advanced Configuration and Power Interface |
| Advanced Encryption Standard process | Advanced Encryption Standard process |
| Advanced Host Controller Interface | Advanced Host Controller Interface |
| Advanced Linux Sound Architecture | Advanced Linux Sound Architecture |
| Advanced Micro Devices | Advanced Micro Devices |
| Advanced Packaging Tool | Advanced Packaging Tool |
| Advanced passenger train | Advanced Passenger Train |
| Advanced Power Management | Advanced Power Management |
| Advanced RISC Machines | ARM Limited |
| Advanced Streaming Format | Advanced Systems Format |
| Advanced Technology Attachment | AT Attachment |
| Advanced Technology Extended | ATX |
| Advanced telecom computer architecture | Advanced Telecommunications Computing Architecture |
| Advanced Television Systems Committee | ATSC Standards |
| Advaïta védanta | Advaita Vedanta |
| advection | advection |
| advenir | happen |
