Multiclavula petricola is a species of saxicolous (rock-dwelling) basidiolichen in the family Hygrophoraceae.

Found in Japan, it was formally described as a new species in 2020 by Hiroshi Masumoto and Yousuke Degawa.

The type specimen was collected from Katashina (Gunma Prefecture) at an altitude of 1,757 m (5,764 ft); here, in a shady coniferous forest, it was found growing on wet volcanic rock.

The lichen makes tiny white fruitbodies and has a globular thallus.

The photobiont partner of the lichen is the green algae that lives on the rock surface.