- Abbott
- Abraha
- Abraham
- Acheson
- Adams
- Adelson
- Aguiar
- Aguilar
- Aiken
- Akiha
- Alano
- Alder
- Aldred
- Alexander
- Alfano
- Allen
- Alvarado
- Alvarez
- Amato
- Amaya
- Ames
- Amundsen
- Andersen
- Anderson
- Andreasen
- Andrejko
- Andrews
- Angel
- Annett
- Anthony
- Appleford
- Aranda
- Aranzubia
- Ardoin
- Arends
- Argyris
- Arias
- Aring
- Armigo
- Armstrong
- Arnold
- Asami
- Asbelle
- Asfaha
- Ashenafi
- Ashford
- Ashland
- Astorga
- Au
- August
- Aurang
- Avalos
- Ayer
- Ayers
- Aylesworth
- Ayotte