Tectus triserialis is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.

The imperforate, solid, heavy shell has a turreted-conic shape.

The upper whorls show a single submedian series of rather prominent tubercles, the lower with about four subequal series of small, separated, rather acute tubercles, the surface between them minutely wrinkled.

The base has a deep seated spiral fold near the columella within .

[4] This marine species occurs off the Philippines, Indonesia and Northern Queensland, Australia