| Atari 400/800 disk |  PuzzlePanic | 1984 | Epyx, Inc. Redwood City, CA, USA |
| Atari 400/800 disk | Pyramid | 1993 | Mirage |
| Atari 400/800 disk | Q-Bert | 1983 | Parker Bros. Beverly, MA, USA |
| Atari 400/800 disk | Qix | 1982 | Atari, Inc. CA, USA |
| Atari 400/800 disk | Quarxon | 1982 | APX Atari Program Exchange |
| Atari 400/800 disk | Quasimodo | 1984 | SynSoft |
| Atari 400/800 disk | Quest for Power | 1981 | Crystalware |
| Atari 400/800 disk | Questions et Réponses Model APX 20081 D | 1981 | Atari PECF Creteil, France |
| Atari 400/800 disk | Questprobe #1: The Incredible Hulk | 1984 | Adventure International |
| Atari 400/800 disk | Questprobe #2: Spider-Man | 1985 | Adventure International |
| Atari 400/800 disk | Questprobe #3: Fantastic Four | 1985 | Adventure International |
| Atari 400/800 disk | Questprobe featuring Human Torch and The Thing | 1985 | Green Valley Publishing |
| Atari 400/800 disk | Questron | 1984 | SSI Strategic Simulations, Inc. 16685 |
| Atari 400/800 disk | Quick Step | 1983 | Imagic, Inc. Los Gatos, CA, USA |
| Atari 400/800 disk | Racing Destruction Set Model 1136 | 1985 | Electronic Arts CA, USA 14633 |
| Atari 400/800 disk | Raid on Gravitron Model AP121 | 1983 | ANTIC Publishing |
| Atari 400/800 disk | Raid on Gravitron Model APX-20267 | 1983 | APX Atari Program Exchange |
| Atari 400/800 disk | Raid over Moscow | 1986 | Access Soft., Inc. |
| Atari 400/800 disk | Rainbow Walker | 1983 | Synapse Soft. Corp. |
| Atari 400/800 disk |  Rally Speedway Demo-Slideshow | 1983 | Adventure International |
| Atari 400/800 disk | Rally Speedway Model 052-0171 | 1983 | Adventure International |
| Atari 400/800 disk | Rampage | 1987 | Activision, Inc. Mountain View, CA, USA 47875 |
| Atari 400/800 disk | Raszyn 1809 | 1992 | Mirage |
| Atari 400/800 disk |  Realm of Impossibility Model AS 45011 | 1985 | Ariolasoft Germany |
| Atari 400/800 disk | RealSports Football | 1983 | Atari, Inc. CA, USA |
| Atari 400/800 disk | RealSports Tennis | 1983 | Atari, Inc. CA, USA |
| Atari 400/800 disk | Rearguard Model 051-0143 | 1982 | Adventure International |
| Atari 400/800 disk | Rearguard Model 052-0143 | 198? | Adventure International |
| Atari 400/800 disk | Rebel Charge at Chickamauga | 1987 | SSI Strategic Simulations, Inc. 16685 |
| Atari 400/800 disk | Red Max | 1987 | Codemasters Soft. Co., Ltd., The 015026 |
| Atari 400/800 disk | Red Moon | 1985 | Level 9 Computing |
| Atari 400/800 disk | Relax | 1984 | Synapse Soft. Corp. |
| Atari 400/800 disk | Repton | 1983 | Sirius Soft., Inc. Sacramento, CA, USA |
| Atari 400/800 disk | Return to Eden | 1984 | Level 9 Computing |
| Atari 400/800 disk | Revenge of the Mutant Camels | 1987 | Mastertronic, Ltd. UK 012967 |
| Atari 400/800 disk | Reverse | 1983 | Mirage |
| Atari 400/800 disk | Reversi II | 1981 | APX Atari Program Exchange |
| Atari 400/800 disk | Ricochet | 1981 | Automated Simulations, Inc. |
| Atari 400/800 disk | Ringmaster | 1983 | APX Atari Program Exchange |
| Atari 400/800 disk | River Raid | 1983 | Activision, Inc. Mountain View, CA, USA 47875 |
