The Anti-Terrorism Act is the short title of several pieces of anti-terrorism legislation and may refer to:
The Anti-Terrorism Act 2005 (Australia) The Anti-terrorism Act, 2009 (Bangladesh) In Canada: The Anti-Terrorism Act, 2001 The Anti-terrorism Act, 2015 The Anti-Terrorism Act 1997 (Pakistan) The Anti-Terrorism Act of 2020 (Philippines) In the United States The Antiterrorism and Effective Death Penalty Act of 1996 (federal) The Anti-Terrorism Act of 2001 (New York state)