Cannon Rock

{{Short description|Island in Northern Ireland}}

{{For|the town in South Africa|Cannon Rocks}}

{{Use British English|date=October 2013}}

{{Use dmy dates|date=January 2024}}

{{Coord|54|24|28.7|N|5|21|59.6|W|region:GB-ARD_type:isle|notes={{cite web|url=http://www.nlb.org.uk/JointPolicy/Policies/Documents/Aids-to-Navigation-Review-2010-2015/|title=Aids to Navigation Review 2010–2015|year=2010|publisher=General Lighthouse Authorities of the United Kingdom and Ireland|page=103|accessdate=18 September 2010|archive-url=https://web.archive.org/web/20120604185053/http://www.nlb.org.uk/JointPolicy/Policies/Documents/Aids-to-Navigation-Review-2010-2015/|archive-date=4 June 2012|url-status=dead}}|name="South Rock lightbuoy, near Cannon Rock"|display=title }}

Cannon Rock is a skerry in the North Channel off the coast of the Ards Peninsula near Cloughey, County Down, Northern Ireland. It is the easternmost point of Ireland. Cannon Rock is east of South Rock, on which there is a disused lighthouse.[http://www.portaferrylifeboat.com/services/service.htm Portaferry Lifeboat - Rescues] "Lifeboat was requested to go to the aid of a {{convert|30|ft|0|abbr=on}} yacht aground on the Canon [sic] Rock, close by the disused South Rock lighthouse tower"