List of alien species in Japan (Provisional)

• Vertebrates
• Mammals & Birds
• Reptiles & Amphibians
• Fishes
• Arthropods
• Insects
• Beetles
• Lepidopterans
• Other insects
• Other arthropods
• Molluscs
• Other animals
• Plants
• Gymnosperms, ferns, non-vascular land plants, & algae
• Angiosperms
• Fabaceae
• Other schizopetalous (1)
• Other schizopetalous (2)
• Other schizopetalous (3)
• Asteraceae
• Other gamopetalous
• Poaceae
• Other monocots
• Other organisms
• References

This provisional list is based on Ecol Soc Jpn (ed) (2002) Provisional list of alien species naturalized in Japan. pp. 298-361, Ecol Soc Jpn (ed) Handbook of Alien Species in Japan. Chijin-Shokan, Tokyo, with information from some other recent resources. The scope of this list is the taxa formerly or currently established in Japan, not only introduced from other countries, but also transported within Japan.