A
| Aaditya |
| Aahaan |
| Aarav |
| Aaron |
| Aaron-lee |
| Aarron |
| Aaryan |
| Aayan |
| Aayush |
| Abdirabi |
| Abdirahman |
| Abdishakur |
| Abdullahi |
| Abel |
| Abraham |
| Ace |
| Adam |
| Addheen |
| Adem |
| Adhran |
| Adi |
| Adit |
| Adiyan |
| Adomas |
| Adrian |
| Aebel |
| Aedan |
| Aedyn |
| Afonso |
| Ahyan |
| Aidan |
| Aiden |
| Aiden-caius |
| Aiden-john |
| Ailbe |
| Ainardas |
| Aironas |
| Aivars |
| Aj |
| Aksel |
| Alan |
| Alantas |
| Alastair |
| Albert |
| Alden |
| Alec |
| Alejandro |
| Aleks |
| Aleksander |
| Aleksis |
| Alekss |
| Alesandru |
| Alex |
| Alexander |
| Alexandru |
| Alex-james |
| Alfie |
| Alfie-jack |
| Alfie-jay |
| Ali |
| Alistair |
| Ally |
| Alvin |
| Ameer |
| Amir |
| Amos |
| Anakin |
| Anas |
| Andre |
| Andrei |
| Andrew |
| Andy |
| Angelo |
| Angus |
| Anthony |
| Antoin |
| Anton |
| Antoni |
| Anwin |
| Aodan |
| Aodh |
| Aodhan |
| Aodhan-james |
| Aogan |
| Aonghus |
| Aran |
| Archer |
| Archie |
| Arijus |
| Aris |
| Arisht |
| Arlo |
| Armandas |
| Armando |
| Arminas |
| Arnas |
| Arnav |
| Arnilove |
| Aron |
| Aronas |
| Arseniy |
| Art |
| Arthur |
| Artur |
| Aryan |
| Asher |
| Ashton |
| Aston |
| Aurick |
| Austin |
| Austyn |
| Avan |
| Avi |
| Ayden |
| Aydin |
| Ayrton |
| Aziz |