Ptychobela baynhami is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

Like Ptychobela suturalis (Gray, 1838), this fusiform, turreted species has a raised fillet at the suture.

But it may be distinguished by its shorter body whorl, its more pronounced ribs, and the difference of colour.

The ribs (in the penultimate whorl 9–10) become obsolete a little above the middle of the whorls where the concavity commences, and, being traversed by a distinct tenuous white spiral thread, have a somewhat angulated appearance.

[2] This marine species occurs in the Indian Ocean off Aden and Somalia