Holtet Nunatak () is a nunatak rising to about 1,300 m, 2 nautical miles (3.7 km) northeast of Grossenbacher Nunatak in the Lyon Nunataks, Palmer Land. Mapped by United States Geological Survey (USGS) from aerial photographs taken by the U.S. Navy, 1965–68, and from Landsat imagery taken 1973-74. Named in 1987 by Advisory Committee on Antarctic Names (US-ACAN) after Jan A. Holtet of the Norwegian Institute of Cosmic Physics, upper atmospheric physicist at Siple Station, 1970-71.
This article incorporates public domain material from the United States Geological Survey document "Holtet Nunatak" (content from the Geographic Names Information System).