The Mediterranean rainbow wrasse (Coris julis) is a small, colourful fish in the family Labridae.

It can be found in the Mediterranean Sea and in the northeast Atlantic Ocean from Sweden to Senegal (though it is a rare wanderer to the southern British Isles).

[3][2] Records of this species south from Senegal and the Cape Verde Islands are actually the closely related Coris atlantica.

In the Mediterranean Sea, the secondary-phase male is green, blue, or brown, with white belly, a dark blue spot over the ventral fin, and a bright orange band on the side, while the smaller primary-phase females and males are brown with yellowish sides and white bellies.

[1][4] If found to be separate, the scientific name Coris festiva (at present considered a synonym of C. julis) is available for the Atlantic population.