Mount Luyendyk is a summit in the western Fosdick Mountains of the Ford Ranges of Marie Byrd Land, West Antarctica.

The peak is named in recognition of Bruce P. Luyendyk, professor (emeritus), University of California, Santa Barbara, who was active in ground- and ocean-based Antarctic research from 1989 to 2015, significantly advancing the scientific knowledge of the Ross Embayment region of Antarctica.

In December, 1989, geologists of the UC Santa Barbara FORCE expedition traveled by snowmobile-sledge to Mt.

Luyendyk, for the purpose of sampling for rock magnetism, petrology, and geochronology studies.

[2] The rocks constitute an exposure of the middle crust that was exhumed approximately 100 million years ago, during the Cretaceous Period, by action on the Fosdick Mountains detachment fault.