| 2021-05-07 23:35:15 | 6.1 | Fiji region | 3,170 |
| 2021-05-07 15:21:13 | 6 | west of Macquarie Island | 3,080 |
| 2021-05-01 01:27:27 | 6.8 | 38 km ESE of Ishinomaki, Japan | 7,412 |
| 2021-04-29 06:50:27 | 6.1 | Kermadec Islands region | 2,987 |
| 2021-04-29 03:58:48 | 5.8 | 170 km NE of Gisborne, New Zealand | 2,708 |
| 2021-04-27 16:33:34 | 5.9 | Kermadec Islands region | 2,951 |
| 2021-04-27 08:05:32 | 6.1 | 174 km ENE of Angoram, Papua New Guinea | 2,798 |
| 2021-04-27 02:12:50 | 5.6 | 179 km ENE of Angoram, Papua New Guinea | 2,800 |
| 2021-04-26 21:07:27 | 5.6 | Kermadec Islands region | 2,972 |
| 2021-04-25 22:28:02 | 6.4 | 205 km WSW of Haveluloto, Tonga | 3,084 |
| 2021-04-24 00:23:38 | 6.5 | 224 km WNW of Pangai, Tonga | 3,277 |
| 2021-04-19 23:58:22 | 6.1 | Nias region, Indonesia | 6,763 |
| 2021-04-10 11:38:31 | 6 | 196 km N of Madang, Papua New Guinea | 2,788 |
| 2021-04-10 09:30:43 | 6.1 | 169 km SSW of Sarangani, Philippines | 4,653 |
| 2021-04-07 18:48:01 | 5.7 | Kermadec Islands region | 2,991 |
| 2021-04-07 09:53:29 | 6.1 | Kermadec Islands region | 2,974 |
| 2021-04-07 05:13:15 | 5.6 | 203 km ENE of Kokopo, Papua New Guinea | 2,655 |
| 2021-04-06 08:16:16 | 5.7 | Kermadec Islands region | 2,942 |
| 2021-04-05 07:37:52 | 6.1 | 194 km NE of Gisborne, New Zealand | 2,722 |
| 2021-04-01 22:10:11 | 5.6 | Kermadec Islands, New Zealand | 2,886 |
| 2021-04-01 15:11:18 | 6 | Fiji region | 2,857 |
| 2021-04-01 09:56:37 | 6.4 | Kermadec Islands, New Zealand | 2,866 |
| 2021-04-01 09:56:37 | 6.6 | Kermadec Islands region | 2,991 |
| 2021-03-20 09:09:43 | 7 | 30 km E of Ishinomaki, Japan | 7,437 |
| 2021-03-19 18:52:43 | 5.6 | off the east coast of the North Island of New Zealand | 2,584 |
| 2021-03-16 18:38:21 | 6.6 | 171 km SSE of Ust’-Kamchatsk Staryy, Russia | 9,206 |
| 2021-03-13 21:21:58 | 6 | Kermadec Islands region | 2,980 |
| 2021-03-13 14:05:01 | 5.9 | Kermadec Islands, New Zealand | 2,849 |
| 2021-03-12 08:54:13 | 5.9 | southeast of the Loyalty Islands | 2,228 |
| 2021-03-12 00:03:19 | 5.8 | south of the Fiji Islands | 2,540 |
| 2021-03-10 20:12:37 | 5.9 | 273 km WNW of Haveluloto, Tonga | 3,092 |