There are 69 unique surnames beginning with A:

Abbott	Abraham	Abrams	Ackerman	Ackley	Acton	Adams
Addis	Adelsberger	Admas	Agner	Ainsworth	Albaugh	Albert
Albright	Albyn	Alden	Alexander	Algire	Alkire	Allemang
Allen	Allender	Aller	Allgower	Allyn	Alpin	Alsbaugh
Amarine	Ambroy	Ambroz	American Guaranty Company	American Legion Post 79, Union Post, Marysville, O	Amerine	Ames
Amrine	Anders	Anderson	Andrew	Andrews	Anthony	Aplin
Appelfeller	Applefellow	Applegate	Archer	Arehart	Argo	Armentrout
Armintrout	Armistead	Armstrong	Arnett	Arnold	Arthur	Artz
Ashbaugh	Ashley	Asman	Atherton	Atkinson	Atwood	Auer
Aultman	Austin	Avery	Axline	Axten	Ayers