1921

1921 in various calendars
Gregorian calendar	1921; MCMXXI
Ab urbe condita	2674
Armenian calendar	1370; ԹՎ ՌՅՀ
Assyrian calendar	6671
Baháʼí calendar	77–78
Balinese saka calendar	1842–1843
Bengali calendar	1328
Berber calendar	2871
British Regnal year	11 Geo. 5 – 12 Geo. 5
Buddhist calendar	2465
Burmese calendar	1283
Byzantine calendar	7429–7430
Chinese calendar	庚申年 (Metal Monkey); 4618 or 4411; — to —; 辛酉年 (Metal Rooster); 4619 or 4412
Coptic calendar	1637–1638
Discordian calendar	3087
Ethiopian calendar	1913–1914
Hebrew calendar	5681–5682
Hindu calendars
- Vikram Samvat	1977–1978
- Shaka Samvat	1842–1843
- Kali Yuga	5021–5022
Holocene calendar	11921
Igbo calendar	921–922
Iranian calendar	1299–1300
Islamic calendar	1339–1340
Japanese calendar	Taishō 10; (大正１０年)
Javanese calendar	1851–1852
Juche calendar	10
Julian calendar	Gregorian minus 13 days
Korean calendar	4254
Minguo calendar	ROC 10; 民國10年
Nanakshahi calendar	453
Thai solar calendar	2463–2464
Tibetan calendar	阳金猴年; (male Iron-Monkey); 2047 or 1666 or 894; — to —; 阴金鸡年; (female Iron-Rooster); 2048 or 1667 or 895

Millennium:	2nd millennium
Centuries:	19th century; 20th century ; 21st century;
Decades:	1900s; 1910s; 1920s ; 1930s; 1940s;
Years:	1918; 1919; 1920; 1921 ; 1922; 1923; 1924;

1921 (MCMXXI) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1921st year of the Common Era (CE) and Anno Domini (AD) designations, the 921st year of the 2nd millennium, the 21st year of the 20th century, and the 2nd year of the 1920s decade. As of the start of 1921, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localized use until 1923.

Gregorian calendar	1921 MCMXXI
Ab urbe condita	2674
Armenian calendar	1370 ԹՎ ՌՅՀ
Assyrian calendar	6671
Baháʼí calendar	77–78
Balinese saka calendar	1842–1843
Bengali calendar	1328
Berber calendar	2871
British Regnal year	11 Geo. 5 – 12 Geo. 5
Buddhist calendar	2465
Burmese calendar	1283
Byzantine calendar	7429–7430
Chinese calendar	庚申年 (Metal Monkey) 4618 or 4411 — to — 辛酉年 (Metal Rooster) 4619 or 4412
Coptic calendar	1637–1638
Discordian calendar	3087
Ethiopian calendar	1913–1914
Hebrew calendar	5681–5682
Hindu calendars
- Vikram Samvat	1977–1978
- Shaka Samvat	1842–1843
- Kali Yuga	5021–5022
Holocene calendar	11921
Igbo calendar	921–922
Iranian calendar	1299–1300
Islamic calendar	1339–1340
Japanese calendar	Taishō 10 (大正１０年)
Javanese calendar	1851–1852
Juche calendar	10
Julian calendar	Gregorian minus 13 days
Korean calendar	4254
Minguo calendar	ROC 10 民國10年
Nanakshahi calendar	453
Thai solar calendar	2463–2464
Tibetan calendar	阳金猴年 (male Iron-Monkey) 2047 or 1666 or 894 — to — 阴金鸡年 (female Iron-Rooster) 2048 or 1667 or 895