A
- A Dark Sky Over Paradise
- A Mind Forever Voyaging
- A Prehistoric Tale
- A Question of Sport
- A320 Airbus
- Aaargh!
- Abombinaball
- Academy
- Action Fighter
- Action Service
- Addams Family, The
- Advanced Dungeons & Dragons: Heroes of the Lance
- Addictaball
- Advanced Destroyer Simulator
- Advanced Fruit Machine Simulator
- Advanced Rugby Simulator
- Advanced Ski Simulator
- Advantage Tennis
- Adventure Quest
- Africa Korps
- African Raiders-01
- After the War
- Afterburner
- Air Bucks
- Air Support
- Airball
- Airborne Ranger
- Albedo
- Alcantor
- Alcatraz
- Alien Legion
- Alien Storm
- Alien Syndrome
- Alien Thing
- Alpha Waves
- Alphamax
- Alpine Games
- Altair
- Altered Beast
- Alternate Reality: The City
- Amazon
- Amberstar
- American Civil War
- American Ice Hockey
- Ammotrak
- Anarchy
- Ancient Battles
- Ancient Games
- Andes Attack
- Angel Nieto Pole 500cc
- Animal Kingdom
- Annals of Rome
- Another World
- Antago
- Apprentice
- Aquanaut
- Arcade Fruit Machine
- Arcade Trivia Quiz
- Archer Maclean's Pool
- Archipelagos
- Arcticfox
- Arkanoid
- Arkanoid 2: Revenge Of Doh
- Armada
- Armalyte
- Armour-Geddon
- Army Moves
- Artificial Dreams
- Artura
- Asgard
- Astaroth
- Astate
- Asterix and the Magic Carpet
- Asterix in Operation Getafix
- Asteroids Deluxe
- Astro Marine Corps
- ATF Advanced Tactical Fighter 2
- Atomic Robo-Kid
- Atomino
- Atomix
- Aussie Joker Poker
- Austerlitz
- Autoduel
- AV-8B Harrier Assault
- Avon and Monsters of Murdac
- Awesome
- Axel's Magic Hammer
- Ayatolla Invaders
- Azarian
Read more about this topic: List Of Atari ST Games