The Tallinn Town Hall is a building in the Tallinn Old Town, Estonia, next to the Town Hall Square. It is the oldest town hall in the whole of the Baltic region and Scandinavia.
The building is located in the south side of the ancient market square and is 36.8 metres long. The west wall is 14.5 metres in length, and the east is 15.2 meters. It is a two-storey building with a spacious basement.
The vane Old Thomas on the top of the Town Hall's tower, that has been there since 1530, has become one of the symbols of Tallinn. The height of the tower is 64 metres. Tallinn Town Hall is located on the Town Hall Square, where the streets Kullassepa street, Dunkri street and Vanaturu kael lead. One of the shortest streets of Tallinn is Raekoja tänav, which is located behind the Town Hall.
The town hall was built by what was then the market square. The town hall square got its current length in the 1370s. Covered with a board roof in 1374, the town hall was probably a single-decked stone building with a basement. The attic was used as a storeroom.