Ancylomenes pedersoni, sometimes known as Pederson's shrimp, is a species of cleaner shrimp. It is part of the genus Ancylomenes and was described in 1958 by Fenner A. Chace, Jr. as Periclimenes pedersoni. Ancylomenes pedersoni is found in the Caribbean Sea, often associated with a sea anemone, at depths of 1 to 15 metres (3 to 49 ft). They are often found on the reefs off Bermuda.