Mount Mullen is a double-peaked mountain 2.5miles east-southeast of Mount Milton in the south Sentinel Range of the Ellsworth Mountains, Antarctica. Located at the west extremity of Petvar Heights, the mountain rises to an elevation of 2400m (7,900feet) and together with Kasilag Pass forms the divide between Kornicker Glacier and Wessbecher Glacier.
The feature was named by US-ACAN in 2006, after Roy R. Mullen, a former employee of the USGS (1960–95, associate chief of the National Mapping Division with responsibility for Antarctic activities 1980–95, USGS representative to SCAR).
