Warren's girdled lizard (Smaug warreni) is a species of relatively large, flattened lizard in the family Cordylidae. The species is native to Southern Africa.
The specific name, warreni, is in honour of British zoologist Ernest Warren (1871–1945), who collected the holotype.
S. warreni has a snout-to-vent length (SVL) of 105–130 mm (4.1–5.1 in). The back is dark brown with small yellow spots forming bands. The belly is light brown, and the throat and lips are mottled. Males have 10-12 femoral pores. The tail is spiny and slightly longer than the SVL.
S. warreni is known from Botswana, Mozambique, and South Africa (the Lebombo Mountains in northeastern South Africa and eastern Swaziland).
The preferred natural habitats of S. warreni are savanna and rock outcrops on wooded mountain slopes, at altitudes of 300–800 m (980–2,620 ft).
S. warreni is ovoviviparous.
