Seguenzia giovia is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.

The shell resembles Seguenzia certoma Dall, 1919, but it is larger and differently sculptured.

The axial sculpture shows numerous equal and equally spaced arcuate threads, with wide interspaces, which on the upper whorls bead the posterior carina, but later are chiefly visible in the interspaces and extend over the whole shell.

There is a deep twisted perforate umbilicus and a thin layer of enamel on the body.

[3] The type specimen was found in the Pacific Ocean off Catalina Island, California.