William Lobb was a British plant collector, employed by Veitch Nurseries of Exeter, who was responsible for introducing to commercial growers Britain Araucaria araucana from Chile and the massive Sequoiadendron giganteum (Wellingtonia) from North America.

The Veitch Nurseries were the largest group of family-run plant nurseries in Europe during the 19th century. Started by John Veitch sometime before 1808, the original nursery grew substantially over several decades and was eventually split into two separate businesses—based at Chelsea and Exeter—as it became unfeasible to run the whole operation from one location. There was a Veitch Nursery in Kingston at Coombe, on Kingston Hill. Famous plant hunters in the Victorian period employed by the Veitch family include the brothers Thomas Lobb and William Lobb from Cornwall and David Bowman.