Goniobranchus sinensis is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.

[2][3][4] This marine species was described from Hong Kong.

[5] It also occurs in Japan and has been reported from Indonesia and Malaysia.

[6] Goniobranchus sinensis is a chromodorid nudibranch with a semi-translucent white mantle and coloured margin.

The rhinophores and gills are cherry red.