Microdrillia dinos is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

[1] The small, claviform shell has a maximum length of 7 mm and a width of 2.8 mm.

The collabral threads are weak.

On the base of the body whorl one can see 12 to 13 spiral lirae.

[2] This marine species occurs on the continental slope of Eastern Transkei, South Africa