A. sieboldii may refer to: Anotogaster sieboldii, the oniyanma, the largest dragonfly species native to Japan Amphiesma sieboldii, the Sikkim keelback, a grass snake species found in South Asia
Synonyms Aralia sieboldii, a synonym for Fatsia japonica, the fatsi or Japanese aralia, a plant species native to southern Japan
See also Sieboldii