Calosoma arrowi is a species of ground beetle in the subfamily of Carabinae. It was described by Breuning in 1928. This species is found in Ethiopia.
Adults reach a length of 13-18 mm and are brachypterous. They are variable in colour, ranging from green with golden hues to cupreous, dark green or blue-black. However, there is always a series of black spots. Adults are mostly nocturnal.
The species is named for English entomologist Gilbert John Arrow.