List of earthquakes in 1921

March
Strongest magnitude	7.3 Mw <img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Flag_of_Honduras_%281866-1898%29.svg/23px-Flag_of_Honduras_%281866-1898%29.svg.png" decoding="async" width="23" height="12" class="mw-file-element" data-file-width="1260" data-file-height="630"> Honduras
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	5

February
Strongest magnitude	7.4 Mw <img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Tonga.svg/23px-Flag_of_Tonga.svg.png" decoding="async" width="23" height="12" class="mw-file-element" data-file-width="960" data-file-height="480"> Tonga
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	2

Earthquakes in 1921
4.0–5.9 magnitude; 6.0–6.9 magnitude;	7.0–7.9 magnitude; 8.0+ magnitude;
Strongest magnitude	Afghanistan, Badakhshan Province November 15 (Magnitude 7.8)
Deadliest	Italian Eritrea, off the coast of Massawa August 14 (Magnitude 5.9) 51+ deaths
Total fatalities	51+
Number by magnitude
9.0+	0
	← 1920 1922 →

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	Location	MMI	Depth (km)	Date
1	7.8	Afghanistan, Badakhshan Province	( )	240.0	November 15
2	7.6	Dutch East Indies, south of Java	( )	15.0	September 11
= 3	7.4	Tonga	( )	15.0	February 27
= 3	7.4	Japan, Ryukyu Islands	( )	35.0	July 4
= 3	7.4	Philippines, east of Mindanao	VII (Very strong)	15.0	November 11
= 4	7.3	Honduras, El Paraiso Department	( )	15.0	March 28
= 4	7.3	Peru, Loreto Region	( )	540.0	December 18
5	7.2	Chile, Tarapaca Region	( )	113.6	October 20
6	7.1	British Solomon Islands, Santa Cruz Islands	( )	35.0	October 15
= 7	7.0	Guatemala, Quiche Department	( )	15.0	February 4
= 7	7.0	Japan, Ryukyu Islands	( )	15.0	April 2
= 7	7.0	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
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
4^[1]	Guatemala, Quiche Department	7.0	15.0
19^[2]	Dutch East Indies, West Papua (province)	6.3	15.0
19^[3]	Dutch East Indies, Papua (province)	6.9	25.0
27^[4]	Tonga	7.4	15.0

March


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
3^[5]	Japan, off the east coast of Honshu	6.9	35.0
5^[6]	India, Nicobar Islands	6.6	20.0
23^[7]	Dutch East Indies, Banda Sea	6.0	50.0
24^[8]	Russian SFSR, off the east coast of Kamchatka	6.6	25.0
28^[9]	Honduras, El Paraiso Department	7.3	15.0
30^[10]	Dutch East Indies, Barat Daya Islands	6.6	170.0

April

April
Number by magnitude
Strongest magnitude	7.0 M_w Japan
Total fatalities	0
8.0–8.9	0
7.0–7.9	1
6.0–6.9	3


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
1^[11]	Dutch East Indies, off the west coast of northern Sumatra	6.8	35.0
1^[12]	British Solomon Islands, Santa Cruz Islands	6.5	35.0
2^[13]	Japan, southwestern Ryukyu Islands	7.0	15.0
10^[14]	Canada, west of Haida Gwaii	6.5	35.0

May

May
Number by magnitude
Strongest magnitude	6.6 M_w Afghanistan
Total fatalities	0
8.0–8.9	0
7.0–7.9	0
6.0–6.9	5


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
1^[15]	Mexico, off the coast of Colima	6.4	15.0
12^[16]	New Guinea, Bougainville Island	6.4	35.0
14^[17]	Dutch East Indies, Makassar Strait	6.2	0.0	VIII	A few homes were damaged or destroyed. Depth unknown.
20^[18]	Afghanistan, Nuristan Province	6.6	35.0
21^[19]	Philippines, northeast of Samar	6.4	35.0

June

June
Number by magnitude
Strongest magnitude	6.7 M_w New Zealand
Total fatalities	0
8.0–8.9	0
7.0–7.9	0
6.0–6.9	1


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
28^[20]	New Zealand, Hawke's Bay, North Island	6.7	25.0

July

July
Number by magnitude
Strongest magnitude	7.4 M_w Japan
Total fatalities	0
8.0–8.9	0
7.0–7.9	1
6.0–6.9	1


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
4^[21]	Japan, Ryukyu Islands	7.4	35.0
15^[22]	Dutch East Indies, off the northeast coast of Halmahera	6.0	140.0

August

August
Number by magnitude
Strongest magnitude	5.9 M_w Italian Eritrea
Deadliest	5.9 M_w Italian Eritrea 51+ deaths
Total fatalities	51+
8.0–8.9	0
7.0–7.9	0
6.0–6.9	0
5.0–5.9	1


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
4^[23]	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^[24]	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

September
Number by magnitude
Strongest magnitude	7.6 M_w Dutch East Indies
Total fatalities	0
8.0–8.9	0
7.0–7.9	1
6.0–6.9	1


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
11^[25]^[26]	Dutch East Indies, south of Java	7.6	15.0		Some light damage was reported on Java. A minor tsunami was reported.
27^[27]	Japan, eastern Sea of Japan	6.5	5.0

October

October
Number by magnitude
Strongest magnitude	7.2 M_w Chile
Total fatalities	0
8.0–8.9	0
7.0–7.9	2
6.0–6.9	2


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
10^[28]^[29]	Dutch East Indies, Papua (province)	6.6	35.0	VII	Some damage was reported.
12^[30]	British Solomon Islands, Kuril Islands	6.6	100.0
15^[31]	British Solomon Islands, Santa Cruz Islands	7.1	35.0
20^[32]	Chile, Tarapaca Region	7.2	113.6

November

November
Number by magnitude
Strongest magnitude	7.8 M_w Afghanistan
Total fatalities	0
8.0–8.9	0
7.0–7.9	2
6.0–6.9	2


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
7^[33]^[34]	Philippines, southeast of Mindanao	6.6	35.0	VIII	Some homes were damaged.
11^[35]^[36]^[37]	Philippines, east of Mindanao	7.4	15.0	VII	A tsunami was reported. Some homes were damaged.
13^[38]	Colombia, La Guajira Department	6.3	15.0
15^[39]	Afghanistan, Badakhshan Province	7.8	240.0

December

December
Number by magnitude
Strongest magnitude	7.3 M_w Peru
Total fatalities	0
8.0–8.9	0
7.0–7.9	2
6.0–6.9	0


Date	Country and location	M_w	Depth (km)	MMI	Notes	Casualties
Date	Country and location	M_w	Depth (km)	MMI	Notes	Dead	Injured
8^[40]	Japan, Ibaraki Prefecture, Honshu	7.0	35.0
18^[41]	Peru, Loreto Region	7.3	540.0

References

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Number by magnitude
Strongest magnitude	7.4 M_w Tonga
Total fatalities	0
8.0–8.9	0
7.0–7.9	2
6.0–6.9	2

Number by magnitude
Strongest magnitude	7.3 M_w Honduras
Total fatalities	0
8.0–8.9	0
7.0–7.9	1
6.0–6.9	5