Nomingia is a genus of oviraptorosaur theropod dinosaur hailing from the Late Cretaceous Bugin Tsav Beds of Mongolia.

The remains, consisting of most of the vertebral column, pelvic girdle and left tibio-tarsus, holotype GIN 100/119, were found in 1994 in layers of the Nemegt Svita, dating to the Maastrichtian.

They were named and described as the type species Nomingia gobiensis by Barsbold, Halszka Osmólska, Mahito Watabe, Philip Currie and Khishigjaw Tsogtbaatar in 2000.

[2] Nomingia is a medium-sized oviraptorosaur, estimated by Gregory S. Paul to have been 1.7 metres (5.6 ft) long and 20 kilograms (44 lb) in weight.

[3] It is characterized by a pygostyle-like mass of five fused vertebrae at the tail end, which Barsbold et al. inferred probably supported a feather fan as in Caudipteryx.