# List of earthquakes in 1921

This is a list of earthquakes in 1921. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. In a stark contrast to 1920, the death toll for this year was only 51. Dutch East Indies and Japan were very active.

## Overall
### By death toll

| Rank | Death toll | Magnitude | Location | MMI | Depth (km) | Date |
| 1 | 51 | 5.9 | Italian Eritrea, off the coast of Massawa | VIII (Severe) | 0.0 | August 14 |
* Note: At least 10 casualties

### By magnitude

| Rank | Magnitude | Death toll | Location | MMI | Depth (km) | Date |
| 1 | 7.8 | 0 | Afghanistan, Badakhshan Province | ( ) | 240.0 | November 15 |
| 2 | 7.6 | 0 | Dutch East Indies, south of Java | ( ) | 15.0 | September 11 |
| = 3 | 7.4 | 0 | Tonga | ( ) | 15.0 | February 27 |
| = 3 | 7.4 | 0 | Japan, Ryukyu Islands | ( ) | 35.0 | July 4 |
| = 3 | 7.4 | 0 | Philippines, east of Mindanao | VII (Very strong) | 15.0 | November 11 |
| = 4 | 7.3 | 0 | Honduras, El Paraiso Department | ( ) | 15.0 | March 28 |
| = 4 | 7.3 | 0 | Peru, Loreto Region | ( ) | 540.0 | December 18 |
| 5 | 7.2 | 0 | Chile, Tarapaca Region | ( ) | 113.6 | October 20 |
| 6 | 7.1 | 0 | British Solomon Islands, Santa Cruz Islands | ( ) | 35.0 | October 15 |
| = 7 | 7.0 | 0 | Guatemala, Quiche Department | ( ) | 15.0 | February 4 |
| = 7 | 7.0 | 0 | Japan, Ryukyu Islands | ( ) | 15.0 | April 2 |
| = 7 | 7.0 | 0 | Japan, Ibaraki Prefecture, Honshu | ( ) | 35.0 | December 8 |
* Note: At least 7.0 magnitude

## Notable events
### February

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 4 | Guatemala, Quiche Department | 7.0 | 15.0 | | | | |
| 19 | Dutch East Indies, West Papua (province) | 6.3 | 15.0 | | | | |
| 19 | Dutch East Indies, Papua (province) | 6.9 | 25.0 | | | | |
| 27 | Tonga | 7.4 | 15.0 | | | | |

### March

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 3 | Japan, off the east coast of Honshu | 6.9 | 35.0 | | | | |
| 5 | India, Nicobar Islands | 6.6 | 20.0 | | | | |
| 23 | Dutch East Indies, Banda Sea | 6.0 | 50.0 | | | | |
| 24 | Russian SFSR, off the east coast of Kamchatka | 6.6 | 25.0 | | | | |
| 28 | Honduras, El Paraiso Department | 7.3 | 15.0 | | | | |
| 30 | Dutch East Indies, Barat Daya Islands | 6.6 | 170.0 | | | | |

### April

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 1 | Dutch East Indies, off the west coast of northern Sumatra | 6.8 | 35.0 | | | | |
| 1 | British Solomon Islands, Santa Cruz Islands | 6.5 | 35.0 | | | | |
| 2 | Japan, southwestern Ryukyu Islands | 7.0 | 15.0 | | | | |
| 10 | Canada, west of Haida Gwaii | 6.5 | 35.0 | | | | |

### May

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 1 | Mexico, off the coast of Colima | 6.4 | 15.0 | | | | |
| 12 | New Guinea, Bougainville Island | 6.4 | 35.0 | | | | |
| 14 | Dutch East Indies, Makassar Strait | 6.2 | 0.0 | VIII | A few homes were damaged or destroyed. Depth unknown. | | |
| 20 | Afghanistan, Nuristan Province | 6.6 | 35.0 | | | | |
| 21 | Philippines, northeast of Samar | 6.4 | 35.0 | | | | |

### June

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 28 | New Zealand, Hawke's Bay, North Island | 6.7 | 25.0 | | | | |

### July

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 4 | Japan, Ryukyu Islands | 7.4 | 35.0 | | | | |
| 15 | Dutch East Indies, off the northeast coast of Halmahera | 6.0 | 140.0 | | | | |

### August

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 4 | China, Liaoning Province | 0.0 | 0.0 | | The magnitude, depth and location were unknown. A tsunami caused major flooding in the area. Some homes were destroyed. | | |
| 14 | Italian Eritrea, off the coast of Massawa | 5.9 | 0.0 | VIII | The 1921 Massawa earthquake caused at least 51 deaths and major damage. | 51+ | |

### September

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 11 | Dutch East Indies, south of Java | 7.6 | 15.0 | | Some light damage was reported on Java. A minor tsunami was reported. | | |
| 27 | Japan, eastern Sea of Japan | 6.5 | 5.0 | | | | |

### October

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 10 | Dutch East Indies, Papua (province) | 6.6 | 35.0 | VII | Some damage was reported. | | |
| 12 | British Solomon Islands, Kuril Islands | 6.6 | 100.0 | | | | |
| 15 | British Solomon Islands, Santa Cruz Islands | 7.1 | 35.0 | | | | |
| 20 | Chile, Tarapaca Region | 7.2 | 113.6 | | | | |

### November

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 7 | Philippines, southeast of Mindanao | 6.6 | 35.0 | VIII | Some homes were damaged. | | |
| 11 | Philippines, east of Mindanao | 7.4 | 15.0 | VII | A tsunami was reported. Some homes were damaged. | | |
| 13 | Colombia, La Guajira Department | 6.3 | 15.0 | | | | |
| 15 | Afghanistan, Badakhshan Province | 7.8 | 240.0 | | | | |

### December

| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Casualties | Casualties |
| Date | Country and location | M$_w$ | Depth (km) | MMI | Notes | Dead | Injured |
| 8 | Japan, Ibaraki Prefecture, Honshu | 7.0 | 35.0 | | | | |
| 18 | Peru, Loreto Region | 7.3 | 540.0 | | | | |