''Hahnia'' may refer to three different genera:
*
''Hahnia'' (spider), a genus of spiders in the family Hahniidae
*
''Hahnia'' (therapsid), a genus of prehistoric therapsids
* ''Hahnia'' (plant), a synonym for a genus of trees, ''
Torminalis
''Torminalis'' is a genus of plants in the rose family, Rosaceae. The genus was formerly included within the genus ''Sorbus'' as the section ''Torminaria'', but the simple-leafed species traditionally classified in ''Sorbus'' are now considered ...
''
{{Genus disambiguation