Fourth part of our systematic study on the tribe Ochyromerini from East Asia treats the genus Gryporrhynchus Roelofs with descriptions of 10 new species as follows: Gryporrhynchusobscuroides sp. nov. (Taiwan), G. ryukyuensis sp. nov. (Japan), G. shigematsui sp. nov. (Japan), G. borneensis sp. nov. (E. Malaysia), G. bengalensis sp. nov. (Bangladesh), G. nepalensis sp. nov. (Nepal), G. rotundicollis sp. nov. (E. Malaysia), G. ovipennis sp. nov. (E. Malaysia), G. constricticeps sp. nov. (E. Malaysia) and G. senohi sp. nov. (Thailand). Redefinition of the genus, key to species, illustrations and photos of habitus and important features of each species are provided.