The name Mountain is a boy's name . Mountain and is often added to lists like Nature Names Chosen by Celebrities.
From the experts:
Mountain names such as Everest and Denali are being used more frequently, but Mountain itself was unknown until Hunger Games star Jena Malone used it as a middle name for her son Ode Mountain. And really, why not? It's one of the most unique baby names in the hot nature category.