John Frederick Baddeley (July 1854 – 16 February 1940) was a British traveller, writer and journalist, best known by his works on Russia and the Caucasus region.

After visiting Russia for seven months in 1879, Baddeley became the Saint Petersburg correspondent for the London Standard, and began a lifelong relationship with that country, travelling widely and writing several important books on its history.

His most outstanding work was Russia, Mongolia, China, a monumental work, published in 1919 in two volumes as a limited edition of only 250 copies, with an elaborate frontispiece ("the book epitomised in a series of pictures", said Baddeley) drawn by Amédée Forestier and engraved by Emery Walker.

It bore a dedication "To my friend of many years The Right Honourable Sir William Mather", stating that the production of the book was "due to his generosity alone".

It earned Baddeley the Victoria Medal of the Royal Geographical Society, and has been later republished as facsimile.