Mount Holmboe is a mountain, high, standing 1nmi north of Mount Liavaag and 7nmi northwest of Mount Weems near the extreme north end of the Sentinel Range in the Ellsworth Mountains of Antarctica.
It was discovered by Lincoln Ellsworth on his trans-Antarctic flight of November 23, 1935, and was named by the Advisory Committee on Antarctic Names for Dr. Jørgen Holmboe, a meteorologist on Ellsworth's Antarctic expedition of 1933–34.