Nettle refers to plants with stinging hairs, particularly those of the genus Urtica . It can also refer to plants which resemble Urtica species in appearance but do not have stinging hairs. Plants called "nettle" include:

• ball nettle – Solanum carolinense
• bull nettle
  • Cnidoscolus stimulosus , bull nettle, spurge nettle
  • Cnidoscolus texanus , Texas bull nettle
  • Cnidoscolus urens , bull nettle
  • Solanum elaeagnifolium , bull nettle, silver-leaf nettle, white horse-nettle
• dead nettle, dumb nettle
  • Lamium , particularly Lamium album
• false nettle – Boehmeria
• flame nettle – Coleus
• hedge nettle – Stachys
• hemp nettle – Galeopsis
• horse nettle:
  • Agastache urticifolia – horse-nettle
  • Solanum carolinense – ball-nettle, Carolina horse-nettle
  • Solanum dimidiatum – western horse-nettle, robust horse-nettle
  • Solanum elaeagnifolium – bull nettle, silver-leaf nettle, white horse-nettle
  • Solanum rostratum – horse-nettle
• nettle tree or tree nettle:
  • Celtis
  • Various species of the genus Dendrocnide
  • Urera baccifera
  • Urtica ferox
• nilgiri nettle, Himalayan giant nettle - Girardinia diversifolia
• painted nettle – Coleus scutellarioides
• rock nettle – Eucnide
• shiny-leaved nettle – Dendrocnide photiniphylla
• spurge nettle – Cnidoscolus
• stinging nettle
  • Hesperocnide
  • most, but not all subspecies of Urtica dioica
  • Urtica gracilis
  • Urtica incisa
  • Urtica ferox
• tree nettle - see nettle tree
• white nettle
  • Lamium album
  • Pipturus argenteus
• wood nettle - Laportea canadensis