| Prel. Rep. | Date | Time(UTC) | Time(Local) | Lat. | Lon. | Depth | Mag. | Region | Waveform |
| 2011/05/18 | 18:42:06.8 | 23:12:06.8 | 35.49 | 52.23 | 15 | ML:2.6 | Tehran Province, 29 km South-East of Damavand | ||
| 2011/05/15 | 11:22:31.3 | 15:52:31.3 | 35.89 | 51.89 | 33 | ML:2.5 | Mazandaran Province, 26 km North-West of Damavand | ||
| 2011/05/15 | 11:14:43.3 | 15:44:43.3 | 34.35 | 52.36 | 16 | ML:3 | Esfahan Province, 97 km South of Garmsar | ||
| 2011/05/12 | 16:55:31.9 | 21:25:31.9 | 34.73 | 52.63 | 29 | ML:2.7 | Semnan Province, 61 km South-East of Garmsar |