Coenogonium pineti is a species of crustose lichen in the family Coenogoniaceae.

[2] Robert Lücking and H. Thorsten Lumbsch transferred it to Coenogonium in 2004 after molecular phylogenetic analysis suggested its placement in that genus.

The lichen has a widespread distribution in cooler, temperate regions of the Northern Hemisphere, but has also been recorded from southeastern mainland Australia and Tasmania.

Its thallus is smooth, greyish-green to greenish-black in colour, and lacks a prothallus; it measures 5–20 mm (0.2–0.8 in) in diameter.

The apothecia are small (0.2–0.5 mm in diameter) and pale with a wide margin.