Pseudochromis ransonneti, the Karimunjawa dottyback, is a species of ray-finned fish in the family Pseudochromidae. It is found in the western Pacific Ocean.
This species reaches a standard length of .
The fish is named for in honor of Eugen von Ransonnet-Villez (1838-1926), an Austrian diplomat, painter, lithographer, biologist and explorer, who sent a collection of fishes from Singapore, including the type specimen of this one.