Aitken Nunatak () is a small rock nunatak, 2,785 metres (9,140 ft) high, standing 3 miles (5 km) southwest of Mount Bumstead in the Grosvenor Mountains. Named by Advisory Committee on Antarctic Names for William M. Aitken, United States Antarctic Research Program aurora scientist at South Pole Station, 1962.
This article incorporates public domain material from the United States Geological Survey document "Aitken Nunatak" (content from the Geographic Names Information System).