Commerzbank Tower is a 56-story, 259 m (850 ft) skyscraper in the banking district of Frankfurt, Germany. An antenna spire with a signal light on top gives the tower a total height of 300.1 m (985 ft). It is the tallest building in Frankfurt and the tallest building in Germany. It had been the tallest building in Europe from its completion in 1997 until 2003, when it was surpassed by the Triumph-Palace in Moscow. Since the departure of the United Kingdom from the European Union, the tower had briefly reclaimed its position as the tallest building in the European Union only to lose the title again in 2021 when Poland's Varso Tower topped out. The Commerzbank Tower is only two metres taller than the Messeturm, which is also located in Frankfurt and was the tallest building in Europe before the construction of the Commerzbank Tower.

Bankenviertel is the name of the central business district in Frankfurt, Germany where many banks, insurance companies, and other financial institutions are located. It is the most important German financial hub, if not one of the largest in Europe along with La Défense in the Paris aire urbaine and London's City and Canary Wharf.