Tamworth is a small community in Stone Mills township in Lennox and Addington County, Ontario, Canada. Tamworth is located due North of Napanee, Ontario and Northeast of Belleville, Ontario, near Kingston, Ontario, and is on Beaver Lake.
Calvin Wheeler built several mills here in the 1840s and it was originally known as Wheeler's Mills. In 1848, a post office opened under the current name, which comes from Tamworth, Staffordshire. Wheeler was an admirer of Sir Robert Peel, member of Parliament for Tamworth.
On February 26th 2014, local trapper Morton Lewis went on a shooting rampage killing one Tamworth resident and injuring another. Morton Lewis was later found dead in his truck. 
Tamworth is also home to the first Irish Language-speaking area, or Gaeltacht, to be announced outside Ireland. Plans for the site include cabins to house upwards of 100 people, classrooms, and a museum.[needs update]
- Rayburn, Alan (1997). Place names of Ontario. Toronto: University of Toronto Press. p. 336. ISBN 0-8020-7207-0. Retrieved 23 October 2017.