Felimare kempfi is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.
The body is elongate, narrow, with the posterior portion of foot extending slightly beyond the mantle margin. Background color is bright blue with a thick yellow line around the mantle margin. There is a central white line and a series of large black and white spots extend down the dorsum. Rhinophores and gills are blue, branchial leaves are with black rachises. It is up to 20 mm long.
Distribution of Felimare kempfi includes Florida, Mexico, Costa Rica, Venezuela, Brazil, Puerto Rico and Panama.
Minimum recorded depth is 6 m. Maximum recorded depth is 37 m.
