Prevention of Terrorism Act may refer to:

• Prevention of Terrorism Acts, passed between 1974 and 1989 to deal with terrorism in Northern Ireland in the United Kingdom
• Prevention of Terrorism Act, 2002, in India
• Prevention of Terrorism Act 2005, in the United Kingdom
• Prevention of Terrorism Act (Sri Lanka), in Sri Lanka, enacted as a temporary law in 1979, then made permanent in 1982
• Prevention of Terrorism Act 2015, in Malaysia

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