The Blackburne Tomtit was a 670 cc V-twin aero engine for light aircraft that was designed and produced by Burney and Blackburne Limited. Burney and Blackburne was based at Bookham, Surrey, England and was a former motorcycle manufacturer.

Blackburne was a trade name of Burney and Blackburne Limited a British manufacturer of motorcycles from 1913 to 1922 at Tongham near Farnham, Surrey. They were also a major supplier of engines to other motor cycle and light car makers and continued to make these until 1937. Burney and Blackburne also made small aircraft engines.