Sir Charles James Fox Bunbury, 8th Baronet of Barton Hall, Suffolk, (4 February 1809 – 18 June 1886) was an English naturalist and Fellow of the Royal Society.
He was a keen botanist and geologist with a particular interest in palaeobotany. He collected plant specimens on expeditions to South America in 1833 and South Africa in 1838. He also accompanied his great friend Sir Charles Lyell, the geologist, on an expedition to Madeira. He was elected a Fellow of the Royal Society in 1851.