The Duchy of Estonia may refer to:
*
Duchy of Estonia (1219–1346)
The Duchy of Estonia ( da, Hertugdømmet Estland la, Ducatus Estoniae), also known as Danish Estonia, was a direct dominion ( la, dominium directum) of the King of Denmark from 1219 until 1346 when it was sold to the Teutonic Order and became pa ...
– ''Hertugdømmet Estland'', a Dominum directum of King of Denmark
*
Duchy of Estonia (1561–1721)
The Duchy of Estonia ( sv, Hertigdömet Estland, et, Eestimaa hertsogkond, german: Herzogtum Estland), also known as Swedish Estonia, ( sv, Svenska Estland, italic=no) was a dominion of the Swedish Empire from 1561 until 1721 during the time ...
– ''Hertigdömet Estland'', a dominion of the Kingdom of Swedish Empire
*Duchy of Estonia (1721–1917) or
Governorate of Estonia
The Governorate of Estonia, also known as the Governorate of Esthonia (Pre-reformed rus, Эстля́ндская губе́рнія, r=Estlyandskaya guberniya); et, Eestimaa kubermang was a governorate in the Baltic region, along with th ...
– ''Эстляндская губерния, Estlyandskaya guberniya'', a viceroyalty of the Russian Empire
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