| Atlantis Chaos | |
| Location: | Phaethontis quadrangle |
| Coordinates: | -34°N -177°W |
Atlantis Chaos is a region of chaos terrain in the Phaethontis quadrangle of Mars. It is located around 34.7° south latitude, and 177.6° west longitude. It is encompassed by the Atlantis basin. The region is 162km (101miles) across, and was named after an albedo feature at 30° S, 173° W.