Achatinella apexfulva is a (probably) extinct species of colorful, tropical, arboreal pulmonate land snail in the family Achatinellidae, once present on Oahu, Hawaii.

The specific name, apexfulva, meaning "yellow-tipped", refers to the yellow tip of the snail's shell.

[5] This species was endemic to forests of the island of Oahu in the Hawaiian archipelago, United States, but is now extinct.

[10] The problems that A. apexfulva faced are not unique: estimated extinction rates in the family Achatinellidae range between 75% and 90%.

[5] The International Union for Conservation of Nature's last study on A. apexfulva was conducted in 1996 and listed the species as Critically Endangered.