Sarcodon quercinofibulatus is a species of tooth fungus in the family Bankeraceae.

Found in Spain, where it grows under Quercus petraea, it was described as new to science in 2011.

The thick, fleshy caps of its fruit bodies are up to 14 cm (5.5 in) in diameter.

Application of a solution of potassium hydroxide turns the flesh grayish-green.

The spores of S. quercinofibulatus are spherical, or nearly so, and typically measure 6.5–7.4 by 5.4–6.4 μm.