- 3D Reflector
- AI
- A Simov
- Aaron (disambiguation)
- Aaron Adams
- Aaron Gachinski
- Abare Guruma
- Abari Malinga
- Abaya
- Abby
- Abe
- Abeshima
- Abigorr
- Abilear Board
- Abisegeri
- Absolute Knights
- Aburada
- Abuyama Tamotsu
- Acker Tamal
- Acra
- Acrobat Keep
- Acrous Obies
- Adam Sanchi
- Adashino
- Adel Siddique
- Admiral Hibiki
- Adult Team
- Aegir Cepheid
- Aen
- Africa Daihyou
- Afuro Terumi
- Aga
- Agalia Rept
- Agarie Yasuo
- Aggressive Beat
- Agon
- Aguchi
- Ai-chan
- Aida Chikara
- Aidoru Sou
- Aiel
- Aijou Jounetsu Neppuu
- Aikata
- Aikawa Masaru
- Aiki
- Aikidou
- Aikou
- Aino Isami
- Air Bullet
- Air Ride
- Aisha
- Aitsu wa Taiyou Boy!
- Aizome
- Aka Gumi
- Akabane
- Akadai
- Akae
- Akagi
- Akagi (Chrono Stone)
- Akagiri
- Akahiko
- Akai (scout character)
- Akai Tonbo
- Akaki Mega Hawk
- Akamine Hiroaki
- Akane (disambiguation)
- Akane (scout character)
- Akaoni
- Akari
- Akari (GO)
- Akarin
- Akasode Matsuri
- Akatsuki no Miko Amaterasu
- Akazukin
- Akechi
- Akeido Tatsuhito
- Aki (scout character)
- Aki Tamamatsu
- Akimoto
- Akita
- Akiyama Himiko
- Akizora Challengers
- Ako
- Aku
- Akuma no Sogekishu
- Akutagawa (scout character)
- Akutagawa Fusanosuke
- Akutsu Kiyoshi
- Alain Failliot
- Alek Akbar
- Alessandro Rossa
- Alex Hawk
- Alexander Hausen
- Alexei Karnov
- Alexei Trepov
- Alica
- Alice
- Alice Berardi
- Aliea A
- Aliea B
- Aliea Gakuen
- Aliea Gakuen (team)
- Aliea Masters
- Aliea Meteorite
- All Arms
- All Delete
- All Skills
- All Skills N
- All Skills R
- All Slim Range
- All Wide Range
- Alligeita
- Alnilam
- Alnitak
- Aloa
- Alonso Fibiano
- Alpha
- Altum
- Alumi
- Alvega Gordon
- Ama no Mikado Stadium
- Amaboshi
- Amagi Daichi
- Amahisa
- Amaho
- Amai Kazuya
- Amakawa
- Amamiya
- Amanda Turner
- Amano (disambiguation)
- Amano Kaiji
- Amano Keita
- Amano Masamichi
- Amaranto Rubino
- Amase Reia
- Amazon River Wave
- Amdu Scias
- Ame
- Amehiko
- Amemiya Taiyou
- Amen
- America Tairiku Senbatsu
- Amethyst
- Amisaki Rea
- Amuro Mikio
- Anansi
- Anazawa
- Ancient Dark
- Andes no Arijigoku
- Andon
- Andou (scout character)
- Andou Tsuneyuki
- Andreas Bebo
- André (scout character)
- André Panzo
- Ane-san
- Angel Ball
- Angel Ray
- Angel Robe
- Angelo Gabrini
- Anger Rage
- Anger Rage N
- Anger Rage R
- Angydra
- Aniki
- Aniki (scout character)
- Ankoku Masayuki
- Ankoku Shin Dark Exodus
- Ankokuji
- Ankou
- Anky
- Ano Ki no Shita ni Atsumarou!
- Another Chaos
- Another Colors
- Anteikan
- Anthony Feruzen
- Anti Critical!
- Anti Cyclone
- Anti Penalty
- Anti Slip
- Anton Gattsuso
- Antonio Galius
- Antwa Arrii
- Anzai Masaru
- Aoba
- Aoba (scout character)
- Aock
- Aoi (scout character)
- Aoki Ryuuku
- Aoki Tamashii
- Aomori
- Aono
- Aono (Chrono Stone)
- Aooni
- Aosai
- Aoshima Kaoru
- Aosori
- Aoyama Shunsuke
- Apas Muulan
- Aporo Hikaru
- Apple
- Aqua
- Aqua Breath
- Aqua Hermit
- Arab no Hinotori Gundan
- Araba
- Arachnes
- Arai
- Arai (GO)
- Araigawa Kumami
- Arakawa
- Araki (scout character)
- Araki Akira
- Arakumo Gakuen
- Araragi
- Arashi Daisuke
- Arashi Shinjirou
- Arashi Tatsumaki Hurricane
- Arashi Tatsumaki Hurricane (song)
- Araya (scout character)
- Araya Konko
- Archery
- Ares (scout character)
- Aresu Ran
- Argo Burgess
- Ari
- Aries
- Arii
- Arijigoku
- Arino Omi
- Arisawa
- Arkadi
- Armadillo Circus
- Armal
- Armed Commander
- Armed Saver
- Arnin
- Aroma Rhineford
- Artemis Ring
- Arthur
- Arthur (disambiguation)
- Artist Team
- Aru
- Arute Saneki
- As Taroth
- Asaga Nobuhiko
- Asaino Saiji
- Asakubo
- Asakura
- Asama Denbei
- Asamizu
- Asari
- Asatsuyu
- Ashida
- Ashiga
- Ashiguro Houichirou
- Ashikawa
- Ashita e no Bye Bye
- Ashita mo Haretara
- Ashita no Field
- Ashita no Hero
- Ashitsu
- Ashiya Noboru
- Ashley Sarpara
- Ashura
- Ashvina Bharani
- Asia Daihyou
- Asia Senbatsu
- Asmo Deus
- Aso
- Asoko ni UFO
- Asou Kurehito
- Assad Gais
- Assault Shoot
- Assist!
- Asta
- Astaroth
- Asterisk Rock
- Asteroid Belt
- Astra Justin
- Astro Break
- Astro Gate
- Asuka
- Asukaji Sakuya
- Asurei Rune
- Atago
- Atari
- Ataru (scout character)
- Atena Tomo
- Athena Assault
- Athol Nortje
- Atla
- Atlanters
- Atlanters N
- Atlanters R
- Atlantis Wall
- Atlas Sword
- Atomic Flare
- Atomiza
- Atou Ran
- Atsui
- Atsuishi Shigeto
- Atsuta Nao
- Attack Gals
- Aurora Curtain
- Aurora Dribble
- Aurora Wave
- Awashima
- Ax
- Axe
- Ayabe Houkurou
- Ayakashi Geneidan
- Ayano Yuuichi
- Ayashii Yatsura
- Ayashii Yatsura A
- Ayashii Yatsura B
- Ayukawa Shun
- Ayuma
- Ayumu (scout character)
- Azemichi Hiroba Ground
- Azu Ryuuichi
- Azubel Turchese
- Azuho
- Azuki
- Azuma
- Azzurro Zaffire
- B.E.L.I.E.V.E
- BIGBANG!
- B Team
- Baba
- Babahs
- Bach
- Bachou
- Back Tornado
- Backdraft
- Bad Boys
- Bad Boys Brother's Blues
- Badai Jaran
- Baddap Sleed
- Bado Addo
- Bae Jeong-ho
- Baek Shi-woo
- Bagre Antonio
- Bahamus
- Bahart Descom