Dorpat is the old name of Tartu, the second largest city in Estonia. Derived from that, it may refer to:
- Bishopric of Dorpat (1224–1558), Prince-Bishopric of Terra Mariana, Holy Roman Empire
- Dorpat Voivodeship (1598–1621), voievodeship of Duchy of Livonia, Polish-Lithuanian Commonwealth
- Kreis Dorpat (1893–1918), county in Governorate of Livonia, Russian Empire
- University of Tartu, previously known as Universität Dorpat (University of Dorpat)
- Treaty of Dorpat (1564), treaty between Sweden and Russia during the Livonian War
Dorpat may also refer to:
- Paul Dorpat (born 1938), American historian and photographer