AD 1021 (MXXI) was a common year starting on Sunday of the Julian calendar.

1021 or variations may also refer to: 1021 (number)

Chronology 1021 BCE, or 1021 B.C., the 1021st year before the Common Era

Places 1021 Flammario, the 1021st asteroid catalogued

Legislation United Nations Security Council Resolution 1021 Philippine Proclamation 1021

Objects by number , US Navy destroyer escort #1021 German submarine U-1021, Nazi Germany Kriegsmarine U-boat #1021 Falcon 9 booster B1021, SpaceX Falcon 9 first stage booster core #1021 Farman F.1021, an experimental aircraft from 1930s France

Other uses Code page 1021 (CH7DEC), a computer character set, the Swiss variant of DEC's National Replacement Character Set (NRCS)

See also

21 (disambiguation)