The white-bearded helmetcrest (Oxypogon lindenii) is a species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae.

The adult female is similar to the male but lacks the crest and beard, and its underparts are dull white with dense greenish brown spots.

[6] The white-bearded helmetcrest is found only in the Andes of northwestern Venezuela, in Mérida and Trujillo states.

[6] The white-bearded helmetcrest migrates from the high páramo in the wet season to lower elevations in the dry.

[6] The white-bearded helmetcrest feeds on nectar; it especially favors Espeletia schultzii and Castilleja fissifolia.

[6] The white-bearded helmetcrest's breeding season is tied to the flowering of Espeletia and is usually between June and November.

It makes a large nest of Espeletia fibers in cavities or below overhangs where it is protected from sun and rain.