Robert Sweet (1783–20 January 1835) was a botanist.

Born at Cockington near Torquay, Devonshire, England in 1783, Sweet worked as a gardener from the age of sixteen, and became foreman or partner in a series of nurseries. He also began producing a number of botanical works, focussing almost exclusively on this aspect of his work between 1826 and 1831. His works include Hortus Suburbanus Londinensis (1818), Geraniaceae (five volumes) (1820–30), Sweet's Hortus Britannicus (1826–27), Flora Australasica (1827–28) and British Botany (with H. Weddell) (1831). He died at Chelsea, London on 22 January 1835.

Sweet is the author of a number of plants, including:

• Abutilon auritum (Link) Sweet
• Abutilon grandifolium (Willd.) Sweet
• Abutilon indicum (L.) Sweet
  Indian Lantern Flower
• Agonis flexuosa (Willd.) Sweet
  Peppermint
• Argemone ochroleuca Sweet
  Mexican Poppy
• Babiana angustifolia Sweet
• Banksia dryandroides Sweet
  Dryandra-leaved Banksia
• Callistemon glaucus (Bonpl.) Sweet
• Coreopsis grandiflora Sweet
  American Tickseed
• Cyanotis axillaris (L.) Sweet
• Dillwynia pungens (Sweet) Benth.
• Hakea ferruginea Sweet
• Hovea chorizemifolia (Sweet) DC.
  Holly-leaved Hovea
• Ipomoea cairica (L.) Sweet
  Coast Morning Glory
• Lablab purpureus (L.) Sweet
  Lablab Bean
• Lachenalia mutabilis Sweet
• Moraea flaccida Sweet
  One-leaf Cape Tulip
• Orthrosanthus multiflorus Sweet
  Morning Iris
• Penaeaceae Sweet ex Guillemin
• Senna barclayana (Sweet) Randell
• Sphenotoma gracile (R.Br.) Sweet
  Swamp Paper-heath
• Wahlenbergia stricta (R.Br.) Sweet
  Austral Bluebell

References

1783 births | 1835 deaths | Robert Sweet