The red fody (Foudia madagascariensis), also known as the Madagascar fody in Madagascar, red cardinal fody in Mauritius, or common fody, is a small bird native to Madagascar and introduced to various other islands in the Indian Ocean. It is a common bird within its restricted range, and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
The red fody is about 13 cm in length and weighs 14–19 g. The male of the species is bright red with black markings around each eye. Its wings and tail are olive-brown. Its underparts are also red, which distinguishes it from other fodies in areas where it has been introduced. The female fody's upper parts are olive-brown and its underparts are greyish brown.