Baeolidia macleayi is a species of sea slug, an aeolid nudibranch.

[2] This species was described from a specimen found in shallow water at Port Jackson, Australia.

[3] Baeolidia macleayi has a translucent brownish body covered with small, irregular opaque white spots and some orange patches over the pericardium and down the middle of the back.

The cerata are moderately long and fusiform in shape.

There is a band of white spots halfway up each ceras and a distinct lemon yellow ring towards the tip.