单斑蓝子鱼，又称狐蓝子鱼，俗名臭肚鱼，为辐鳍鱼纲鲈形目刺尾鱼亚目蓝子鱼科的其中一个种。

本鱼西太平洋区，包括琉球群岛、中国南海、澳洲西部沿海、菲律宾等海域。

The blotched foxface, Siganus unimaculatus, is a species of rabbitfish found at reefs and lagoons in the central Indo-Pacific. Except for the black spot on the rear upper body, it resembles the closely related foxface rabbitfish.