- Ansell (continued)
- Anshutz
- Ansle
- Joan (before 1639 - 1672)
- Anslow
- Anson
- Anstee
- Aplin
- Applebee
- Appleby
- Appleton
- Apps
- Archard
- Sarah (between 1852 and 1853 - )
- Archbold
- Archer
- Archibald
- Archinal
- Argent
- Argyle
- Arkwright
- Armiger
- Armor
- Armour
- Armour Milne
- Armour-Milne
- Armstrong
- Arnold