Phlox speciosa is a species of phlox known by the common name showy phlox. It is native to western North America from British Columbia to Arizona and New Mexico, where it occurs in sagebrush, pine woodlands, and mountain forests. It is an erect perennial herb with a shrubby base growing up to about 40 centimeters tall. The leaves are linear or lance-shaped, oppositely arranged, and generally glandular. The inflorescence bears one or more white to pink flowers with elongated tubular throats each up to about 1.5 centimeters long. The corolla has five double-lobed, notched, or heart-shaped lobes.