Maihueniopsis (from Greek opsis, "view", referring to its resemblance to the unrelated Maihuenia) is a genus of the cactus family (Cactaceae), containing 18 species.

The former genus Puna R.Kiesling is now synonym to Maihueniopsis.

Species: Species of the genus Maihueniopsis according to Plants of the World Online :

Image	Scientific name	Distribution
	F.Ritter}}	Chile (Atacama)
	(Phil.) F.Ritter}}	Chile (Antofagasta)
	(Espinosa) F.Ritter}}	Chile (Antofagasta)
120px]]	(Otto ex Pfeiff.) E.F.Anderson}}	Argentina (San Juan, Mendoza)
	(F.Ritter) F.Ritter}}	Chile (Atacama)
	(F.Ritter) F.Ritter}}	Chile (Antofagasta)
	F.Ritter}}	Chile (Atacama)
120px]]	(Hensl.) F.Ritter}}	Chile to Argentina
	F.Ritter}}	Chile (Atacama).
	G.J.Charles}}	Argentina (La Rioja)
120px]]	(Haw.) R.Kiesling}}	Chile to Argentina
	F.Ritter}}	Chile (Coquimbo)
120px]]	(Britton & Rose) D.R.Hunt}}	Argentina
	(Werderm.) F.Ritter ex P.C.Guerrero & Helmut Walter}}	Chile.
120px]]	(Backeb.) R.Kiesling}}	Argentina (Jujuy, Salta)
	Speg.}}	Bolivia to Argentina.
120px]]	(Pfeiff.) F.Ritter}}	Chile to Argentina (Mendoza, San Juan)
	(Salm-Dyck ex Pfeiff.) D.R.Hunt}}	Argentina (Mendoza, Neuquén)
	(Espinosa) Katt. & Lodé}}	Chile (Coquimbo)
	F.Ritter}}	Chile (Coquimbo)