摘要: The class of 2d minimal model CFTs with higher spin AdS 3 duals is extended to theories with large [FORMULA]= 4 superconformal symmetry. We construct a higher spin theory based on the global D (2, 1| α) superalgebra, and propose a large N family of cosets as a dual CFT description. We also indicate how a non-abelian version of this Vasiliev higher spin theory might give an alternative description of IIB string theory on an AdS 3× S 3× S 3× S 1 background.