| Map: | Antarctica |
| Country Type: | Continent |
| Country: | Antarctica |
| Part Type: | Area |
| Part: | Marie Byrd Land |
| Range Coordinates: | -85.3833°N -121°W |
The Horlick Mountains (-85.3833°N -121°W) are a mountain group in the Transantarctic Mountains of Antarctica, lying eastward of Reedy Glacier and including the Wisconsin Range, Long Hills and Ohio Range.
The mountains were discovered in two observations by the Byrd Antarctic Expedition, 1933–35, one by Kennett L. Rawson from a position in about -83.0833°N -124°W, at the end of his southeastern flight of November 22, 1934, and another by Quin Blackburn in December 1934, from positions looking up Leverett Glacier and Albanus Glacier. Portions of the Wisconsin Range are recorded in aerial photography obtained by United States Navy Operation Highjump, 1946–47. The entire mountain group was surveyed by USARP parties and was mapped from United States Navy aerial photographs, 1959–64. They were named by Admiral Richard E. Byrd for William Horlick, of the Horlick's Malted Milk Corp., a supporter of the Byrd expedition of 1933–35.
According to Mirsky's 1969 geologic map of the Horlick Mountains, the Horlick Mountains extend eastward from the mouth of the Reedy Glacier to Iversen Peak at the eastern tip of the Ohio Range, about, and include the Wisconsin Range, Long Hills and Ohio Range.A 2005 map by Davis and Blankenship shows the Horlick Mountains including the eastern part of the Queen Maud Mountains and most of the Wisconsin Range.To their east the Hercules Dome separates the Horlick Mountains from the Thiel Mountains to the east.