Wilkniss Mountains (78°1′S161°7′E) is a prominent group of conical mountains, 10 miles (16 km) long running north-south, located 9 miles (14 km) east-southeast of Mount Feather, Quartermain Mountains, in Victoria Land, Antarctica. The mountains are 3 miles (4.8 km) wide in the north portion where Mount Blackwelder (2,340 m) and Pivot Peak (2,450 m) rise above ice-free valleys. Except for an outlying southwest peak, the south portion narrows to a series of mainly ice-covered smaller peaks. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1992 after Peter E.