The Mackenzie Institute for the Study of Terrorism, Revolution and Propaganda is an independent and non-partisan think tank in Toronto, Ontario, Canada.

[3] The Mackenzie Institute publishes online research papers on a wide variety of geopolitical security matters, with a focus on terrorism, political extremism, warfare, and organized crime.

[16] In 1994, journalist Michael Valpy criticized the Institute for producing what he described as an ideologically-driven report of supposed "leftist conspiracies".

[20][21] In 2005, the Institute released a report entitled "Waiting for the Kaboom: Indicators to Watch for", described as a citizen's guide to finding terrorists.

In this report, John C. Thompson encouraged Canadians to watch for theft of credentials and credit cards, attempts to buy weapons in bulk, increased visits to access tunnels under office towers, and large groups of men living together "for no apparent purpose".

[23] The Mackenzie Institute later issued a revised version of the report, under the new title "Precursors of Hostile Intent: Signs of a Potential Terrorist Attack".