- Aames, Willie
- Abbott, Bud
- Abbott, David 'Tank'
- Abraham, F. Murray
- Abrahams, Jon
- Abrams, J.J.
- Acevedo, Kirk
- Ackland, Joss
- Ackles, Jensen
- Acovone, Jay
- Adams, Don
- Adams, Nick
- Adams, Stanley
- Addie, Robert
- Addy, Mark
- Adelstein, Paul
- Adkins, Seth
- Adler, Charlie
- Adoti, Razaaq
- Adsit, Scott
- Adway, Dwayne
- Afable, Sean Michael
- Affleck, Ben
- Affleck, Casey
- Agar, John
- Agustin, Marvin
- Aiello, Danny
- Aiken, Liam
- Airlie, Andrew
- Akin, David
- Akinnuoye-Agbaje, Adewale
- Alaimo, Marc
- Alaskey, Joe
- Alazraqui, Carlos
- Albert, Eddie
- Albrecht, Richard
- Albright, Hardie
- Alda, Alan
- Alejandro, Kevin
- Aleksander, Grant
- Alexander, Flex
- Alexander, Jason
- Alexi-Malle, Adam
- Alfieri, Victor
- Ali, Mahershalalhashbaz
- Allen, Chad
- Allen, Fred
- Allen, Keith
- Allen, Steve
- Allen, Tim
- Allen, Tyrees
- Allen, Woody
- Allman, Marshall
- Allred, Corbin
- Allwine, Wayne
- Almodovar, Pedro
- Alonso, Adrian
- Alonso, Laz
- Alper, Murray
- Altman, Robert
- Alvarado, Aris
- Alvarez, George
- Alyn, Kirk
- Amalric, Mathieu
- Amandes, Tom
- Amedori, John Patrick
- Ames, Leon
- Amos, John
- Anders, David
- Anderson, Anthony
- Anderson, Eddie
| - Anderson, Harry
- Anderson, Kevin
- Anderson, Louie
- Anderson, Paul Thomas
- Anderson, Paul W.S.
- Anderson, Richard Dean
- Anderson, Wes
- Andrews, Anthony
- Andrews, Dana
- Andrews, Naveen
- Andrews, Real
- Angarano, Michael
- Anglim, Philip
- Anholt, Christien
- Aniston, John
- Annable, Dave
- Ansah, Joey
- Ansara, Michael
- Anselmo, Tony
- Anspaugh, David
- Apatow, Judd
- Applegate, Royce
- Arana, Tomas
- Arbuckle, Fatty
- Arcand, Nathaniel
- Arden, Michael
- Argento, Dario
- Arkin, Adam
- Arkin, Alan
- Arliss, George
- Arlovski, Andrei
- Armstrong, Alun
- Armstrong, Curtis
- Armstrong, Matthew John
- Arnaz, Desi
- Arness, James
- Arnett, Will
- Arnold, Tom
- Aronofsky, Darren
- Arquette, Alexis
- Arquette, David
- Ashby, Linden
- Ashmore, Shawn
- Ashton, Joseph
- Askey, Arthur
- Asner, Ed
- Assante, Armand
- Astaire, Fred
- Astin, John
- Astin, Mackenzie
- Astin, Sean
- Atkins, Christopher
- Atkins, Sharif
- Atkinson, Rowan
- Attell, Dave
- Attenborough, David
- Atterton, Edward
- Auberjonois, Rene
- Aude, Eric
- Auteuil, Daniel
- Autry, Gene
- Avalon, Frankie
- Avina, Frankie
- Avni, Aki
- Ayer, David
- Ayers, Sam
- Aykroyd, Dan
- Ayres, Lew
- Azaria, Hank
- Azizi, Anthony
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