| Date | Event |
|---|---|
| March 11 1921 | Ástor Piazzolla Was Born |
| March 01 1921 | First Ashes Whitewash By Australian Cricket Team |
| March 06 1921 | Portuguese Communist Party Founded |
| March 08 1921 | Spanish Prime Minister Eduardo Dato Iradier is assassinated |
| March 12 1921 | Turkish Grand National Assembly Adopts Istilklal Marsi |
| March 13 1921 | Mongolia Declares Independence |
| March 15 1921 | Talaat Pasha Is Killed In Berlin |
| March 17 1921 | Polish Republic Adopts March Constitution |
| March 18 1921 | Poland And Soviet Union Sign Peace Of Riga |
| March 19 1921 | IRA Escapes British Forces In Crossbarry |
| March 21 1921 | Bolshevik Party Implements New Economic Policy |
| March 31 1921 | The Royal Australian Air Force Is Formed |