Sentinel (disambiguation)

Sentinel may refer to:


 * Sentinels, the Forerunner constructs.
 * Sentinel Majors, the upgraded Sentinels.
 * Sentinel Launchers, the devices that allow Sentinels to move around Forerunner facilities, whether it is a Halo or the Forerunner Gas Mine.
 * Sentinel Beam, the weapon Sentinels use, which is wieldable in Halo 2 and Halo 3.