Hartmania is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms.

Hartmania contains a single species, Hartmania moorei which is known from the north-west Atlantic Ocean off the coast of North America from shallow water to depths of about 80 m. [2] Hartmania moorei is a short-bodied scale worm with about 35 to 37 segments and 15 pairs of elytra.

The prostomium is bilobed and deeply divided anteriorly with a pair of cephalic peaks with rounded tips.

The notochaetae are about as thick as the neurochaetae and all chaetae have serrations in transverse rows and sharply pointed unidentate tips.

[2][3] Some specimens of Hartmania moorei have been collected from the tubes of nereidid polychaetes such as Alitta virens and is likely to have a commensal relationship with them.