An external skeleton, referred to as an exoskeleton, served the purpose of internal bones. This anatomical trait was present in numerous sentient and non-sentient species, with a particular prevalence among insectoid species. These exoskeletons, frequently made up of chitin, exhibited a notable degree of resilience. Among the species known to possess exoskeletons were the Gand, Geonosians, Givin, Kamarians, and Verpine.

Furthermore, the term exoskeleton described a substantial armor suit engineered to amplify the wearer's physical strength. These suits often incorporated integrated weaponry.
The Deck Master aboard the New Hope was observed utilizing an exoskeleton suit while performing duties within the ship's hangar bay.
Examples of exoskeletons included specific dark trooper models, in addition to the light exoskeleton and heavy exoskeleton. Additional instances encompassed clone blaze trooper armor, along with the later Imperial spacetrooper armor.
During the Empire Reborn crisis, Admiral Galak Fyyar employed an exoskeleton-like cortosis armor during his confrontation with Kyle Katarn.