| Achille | Greek name meaning 'defender of the people' or 'my strong one', derived from Achilles, a legendary hero. |
| Achilleo | One who suffers from pain. |
| Achilleus | Mythological hero, son of Peleus and Thetis, known for his invincibility and tragic fate in the Trojan War. |
| Acksel | Father of peace and harmony. |
| Adalat | A name meaning justice or fairness. |
| Adalbricht | Noble and bright |
| Adamm | A name meaning man of red earth. |
| Addan | A name meaning of the red earth. |
| Adden | One who is fiery; little fire |
| Addonis | In mythology; a handsome young man loved by aphrodite |
| Adebowale | Return of the crown |
| Adelmar | A name meaning noble and famous. |
| Adelmund | A name meaning noble protector. |
| Adelram | Noble and wise protector |
| Adelrik | Powerful and strong ruler |
| Ademar | Strong and famous |
| Adenn | One who is fiery; little fire |
| Adetokunbo | Adetokunbo means 'crown of wealth' or 'wealthy crown' in Yoruba, a Nigerian language. |
| Adheen | Follower; devotee |
| Adlii | Related to justice |
| Admir | Derived from Arabic, 'Admir' means 'praiseworthy' or 'worthy of praise', a term of admiration. |
| Admiral | High-ranking naval officer in command of a fleet or squadron, ranking above a vice admiral. |
| Adone | Italian surname derived from 'adone,' meaning 'noble' or 'exalted,' possibly related to the Latin 'adon,' meaning 'lord.' |
| Adoni | My lord or ruler of all |
| Adonias | The Lord is my God |
| Adonnis | In mythology; a handsome young man loved by aphrodite |
| Adriann | A man from hadria |
| Adrianus | From the city of Adria |
| Adriell | Of gods congregation |
| Adrienn | One from the Adriatic sea |
| Adryan | Adryan is a variant of Adrian, derived from the Latin 'adrianeus,' meaning 'from Adria' or 'dark.' |
| Adventure | A thrilling or exciting experience, typically involving travel or exploration, often with a sense of risk or challenge. |
| Aeddan | A little fiery, bright soul |
| Aelwyn | A fair and blessed friend |
| Aemon | Wealthy protection; prosperity; fortune; riches |
| Aerlin | Aerlin is a variant of Airlin, derived from the Gaelic word for 'air' or 'sky'. |
| Aerol | Derived from 'aero' meaning air or sky, and 'ol' a suffix suggesting a connection to the air. |
| Aesop | A name meaning storyteller |
| Aesten | Derived from Old English 'æst' meaning 'east' or 'eastern', possibly referring to someone from the eastern region. |
| Aetisham | Preserving oneself from sin |