August 14, 1921
Centennial event in Peru
1921 battle of the Turkish War of Independence
1921 treaty which recognised that a land-locked state could register ships and sail them on the sea using its own flag
1921 battle of the Third Silesian Uprising
1921 South American Championship — 1921 edition of the association fotoball South American Championship
1921 treaty between Soviet Russia and Turkey
Kronstadt rebellion — uprising against the Bolsheviks in March 1921
World Chess Championship 1921
Conflict between Panama and Costa Rica in 1921
1921 short naval battle of the Russian Civil War