Subulina octona is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.

Distribution: The native distribution of this species includes:

• Caribbean
• Cuba
• Venezuela

This species has been introduced to and become established in:

• Tanzania
• Dominica
• Czech Republic as a "hothouse alien"
• Great Britain as a "hothouse alien"
• Pratas Island, Taiwan
• and other areas

Parasites: Subulina octona serves as an intermediate host for:

• Postharmostomum gallinum
• Angiostrongylus cantonensis
• Platynosomum illiciens (syn.: P. fastosum)