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)