Piseinotecus kima is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Piseinotecidae.
This nudibranch was described from Oysterbay, Dar es Salaam, Tanzania.
This piseinotecid nudibranch is translucent white in colour and reached 5 mm in length but probably grows larger as the only known animal was not fully mature. The entire body and the lower part of the rhinophores are covered with scattered orange-yellow and smaller white spots. The rhinophores and oral tentacles have white spots near the base, followed by a pale green band, then a broad white band and clear tips. The digestive gland in the cerata is pale brown and there are white and small red-brown spots on the surfaces of the cerata. The cerata are slightly tuberculate as in some species of Eubranchus.
Piseinotecus kima feeds on hydroids.