Boreomysis sphaerops is a species of mysid crustaceans from the subfamily Boreomysinae (family Mysidae).

The species is a meso-bathypelagic mysid, distributed in the West Indo-Pacific, although known only from few records off Japan and Australia.

[2][1][3] In March-April 1938, a large number of specimens was brought by a vertical net from 1000 m depth to the surface from Sagami Bay off Ajiro Island in Japan.

It is rather similar to Boreomysis obtusata, sharing the short rostrum, flanked by rounded angles.

It is so far sampled from two localities off New South Wales coast, in Central Eastern Commonwealth Marine Reserve and off Byron Bay.