The Central and South New Guinea languages (CSNG) are a proposed family of Trans–New Guinea languages (TNG). They were part of Voorhoeve & McElhanon's original TNG proposal, but have been reduced in scope by half (nine families to four) in the classification of Malcolm Ross. According to Ross, it is not clear if the pronoun similarities between the four remaining branches of Central and South New Guinea are retentions for proto-TNG forms or shared innovations defining a single branch of TNG. Voorhoeve argues independently for an Awyu–Ok relationship, and Foley echoes that Asmat may be closest to Awyu and Ok of the TNG languages. Regardless, the four individual branches of reduced Central and South New Guinea are themselves clearly valid families.