The University of Rostock (or Rostock University, German: Universität Rostock) (German pronunciation is the university of the city Rostock, in the German state of Mecklenburg-Vorpommern.
Founded in 1419, it is one of the oldest universities in the world – and the oldest and largest university in continental northern Europe and the Baltic Sea area. It is the third oldest university in Germany in continuous operation. The university has also been associated with 5 Nobel Prize laureates. In winter semester 2013/14, 14,417 students were matriculated at Rostock University.

It was founded in 1419 by confirmation of Pope Martin V and thus is the oldest university in Northern Europe.
In Germany, there are only five universities that were founded before, while only Heidelberg and Leipzig operated continuously since then: Heidelberg (1386), Cologne (1388), Erfurt (1392/1994), Würzburg (1402/1582) and Leipzig (1409). That makes Rostock University the third oldest German university in continuous operation.
Throughout the 15th century, the University of Rostock had about 400 to 500 students each year, a large number at that time. Rostock was among the largest universities in Germany at the time and many of its students also came from the Low Countries, Scandinavia or other states bordering the Baltic Sea.
In the course of political struggles and pressure from the church, the university moved to Greifswald in 1437 and remained there until 1443. From 1487 to 1488 teaching took place in Lübeck.
A few years later the city of Rostock, its university also became Protestant in 1542. Humanism and Lutheranism were defining characteristics of the university. After the Thirty Years' War (1618–1648), the University of Rostock played only a regional role. When the "ownership" of the university moved from the city to the state (Grand Duchy of Mecklenburg-Schwerin
) in 1827, however, things changed for the better. The end of the 19th century saw generous building activity in Rostock's alma mater and the university soon regained its old reputation amongst German universities.