Jagdgeschwader 21

{{short description|Nazi fighter wing}}

{{Infobox military unit

| unit_name =Fighter Wing 21

| native_name =Jagdgeschwader 21

| image =

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| dates =1939–1940

|country={{flag|Nazi Germany}}

|branch=Luftwaffe

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| garrison =Döberitz

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| battle_honours =Poland
France

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| aircraft_attack =

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| aircraft_fighter =

| aircraft_interceptor =

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}}

Jagdgeschwader 21 was a fighter wing of Nazi Germany's Luftwaffe in World War II.