The Powder Tower or Powder Gate (Czech: Prašná brána) is a Gothic tower in Prague, Czech Republic. It is one of the original city gates. It separates the Old Town from the New Town.

Powder Tower, as with many historical sites in Prague, undergoes periodic preservation and restoration. The most recent treatment began Summer 2024 and is scheduled to be completed in October. Jiří Pospíšil, Deputy Mayor for Culture and Tourism stated "It is our duty to take care of Prague's heritage buildings, which are a symbol of Prague and the legacy of our ancestors ... Now, in cooperation with Prague City Tourism, we are starting the repair of the Powder Tower, and I am very happy that the tower will have a literal new coat."