Austroboletus subflavidus is a species of bolete fungus in the family Boletaceae.

It is found in eastern North America, where it fruits near oak and pine trees.

Originally described as a species of Tylopilus by American mycologist William Murrill in 1938,[2] it was transferred to the genus Austroboletus by Carl B. Wolfe in 1980.

[3] The fruit body has a white to yellowish convex to flattened cap measuring 3–10 cm (1.2–3.9 in) in diameter.

The pores on the cap underside, which measure about 1 mm wide, are initially white to grayish before becoming pinkish.