Boletus coniferarum, the conifer bolete, is a mushroom of the genus Boletus native to North America.

The species is inedible[1] due to its extremely bitter taste.

[2] The semi-velvety cap is grayish and the yellow tubes stain dark blue.

[2] The stipe is yellowish, darkening in age, and sometimes larger near the base.

[2] Boletus frustosus is similar, but has reddish hues at the bottom of the stipe,[2] as does Cyanoboletus pulverulentus, which stains a greener hue than B. coniferarum and tastes mild.