The Executor I-class Star Dreadnought represents a specific Executor-class Star Dreadnought design utilized by the Imperial Navy throughout the Imperial Era. A Star Dreadnought of this classification was once observed navigating above a white, cloud-covered planet, accompanied by several Imperial-class Star Destroyers. This particular model stretched 19,000 meters in length, utilized red Executor-50.x engines for propulsion, and was defended via a pair of Kuat Drive Yard deflector shield generator domes; it was later superseded by the Executor II-class Star Dreadnought.
Within the 2019 Super Star Destroyer Expansion Pack for Star Wars: Armada, a miniatures game by Fantasy Flight Games, a card bearing the name "Executor I-class Star Dreadnought" made reference to this vessel.