| Adrien-Marie Legendre | Adrien-Marie Legendre |
| Adrián López Álvarez | Adrián López |
| adroit | zręczny |
| Adršpach-Teplice Rocks | Adršpašskoteplické skály |
| AdSense | Google AdSense |
| adsorption | adsorpcja |
| ADSR envelope | Generator obwiedni |
| adult | dorosły |
| Adult contemporary music | AC Cars |
| adult education | edukacja dorosłych |
| Adult evening classes | Uniwersytet ludowy |
| adulterer | cudzołożnik |
| adulteress | cudzołożnica |
| adulterous | cudzołożny |
| adulthood | dorosłość |
| adumbration | zapowiedź |
| Adunis | Adonis |
| Advaita Vedanta | Adwajta Wedanta |
| advance | postęp |
| Advance Australia Fair | Hymn Australii |
| Advance fee fraud | Nigeryjski szwindel |
| Advanced Access Content System | Advanced Access Content System |
| Advanced Audio Coding | AAC |
| Advanced Configuration and Power Interface | ACPI |
| Advanced Host Controller Interface | Advanced Host Controller Interface |
| Advanced Idea Mechanics | Aeronomy of Ice in the Mesosphere |
| Advanced language | Język wysokiego poziomu |
| Advanced Life Support | Reanimacja |
| Advanced Linux Sound Architecture | ALSA |
| Advanced Micro Devices | Advanced Micro Devices |
| Advanced Mobile Phone System | AMPS |
| Advanced Modular Vehicle | KTO Rosomak |
| Advanced Packaging Tool | APT |
| Advanced Passenger Train | Szybka kolej |
| Advanced Power Management | Advanced Power Management |
| Advanced Programmable Interrupt Controller | APIC |
| Advanced Systems Format | Advanced Systems Format |
| Advanced Technology Attachment | ATA |
| Advanced Video Codec High Definition | Advanced Video Codec High Definition |
| Advanced Z-transform | Zmodyfikowana transformata Z |
| advancement | postęp |
| advantage | korzyść |
| Advantage over | Korzyúă |
| advantageous | korzystny |
| advantageously | pomyślnie |
| Advection equation | Adwekcja |
| Advent | adwent |
| Advent calendar | Adwent |
| Advent Christian Church | Chrześcijański Kościół Adwentystów |
| Adventist | adwentysta |
| Adventist Development and Relief Agency | ADRA |
| adventure | przygoda |
| adventure game | gra przygodowa |
| Adventure novel | Powieść przygodowa |
| Adventure racing | Rajdy przygodowe |
| adventurousness | przedsiębiorczość |
| adverb | przysłówek |
| adverbial | okolicznik |
| adverbial participle | imiesłów przysłówkowy |
| adversary | przeciwnik |
| adverse | niekorzystny |
| adverse effect | efekt uboczny |
| adverse event | efekt uboczny |
| Adverse selection | Negatywna selekcja |
| advertisement | anons |
| Advertising | Reklama |
| Advertising column | Słup ogłoszeniowy |
| advice | rada |
| advise | radzić |
| advisedly | umyślnie |
| advisor | doradca |
| advocate | szermierz |
| Advocate General | Rzecznik Generalny Trybunału Sprawiedliwości Wspólnot Europejskich |
| Advokat | Advokat |
| Adwa | Adua |
| AdWords | Google AdWords |
| Adygea | Adygeja |
