Antrodiella lactea is a species of fungus in the family Steccherinaceae.

The type collection was made in Maoershan Nature Reserve (Xing'an County, Guangxi), where it was found growing on a fallen angiosperm branch.

The specific epithet lactea refers to the cream-coloured fruit body.

The fungus has a trimitic hyphal system, and its generative hyphae have clamp connections.

Its smooth, thin-walled spores range in shape from oblong to ellipsoidal, and typically measure 3.1–3.6 by 2.1–2.4 μm.