Jonathan Betts MBE (born January 1955) is a British horological scholar and author, and an expert on the timekeepers created by John Harrison in the middle of the 18th century.
Betts wrote a biography about Rupert Gould, the restorer of the Harrison timekeepers.
The biography was published in 2006 by Oxford University Press under the title Time Restored: The Harrison Timekeepers and RT Gould, the Man Who Knew (Almost) Everything.
He was on the vetting committee of the annual art fair organised by the British Antique Dealers' Association and was chairman of the clocks vetting committee of London's Masterpiece Fair.
In 1996, he was credited for the idea and detail for a central element in the plot of "Time on Our Hands", an episode of the British TV comedy Only Fools and Horses.