Buccinaria okinawa is an extinct species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The protoconch is small, conical and pointed, consisting of 2½ whorls ornamented with fine, diagonally cancellate or "sinusigerid" sculpture.

The outer lip is thin, gently curving, and narrowly indented to form a weak anal sinus along the subsutural slope.

The shell is covered by raised spiral lines which are finer and more closely set above the periphery but broader and more widely spaced towards the base of the whorl.

The interspaces on the lower part of the whorl bear secondary and even tertiary threads.