Major

Major is a common rank both in the Covenant and the UNSC. "Major" may refer to any of the following:

Covenant

 * Jiralhanae Major, Jiralhanae Infantryman with Blue armor.
 * Kig-yar Major, Kig-yar Infantryman with an orange shield.
 * Sangheili Major, Sangheili Infantryman with Red armor.
 * Unggoy Major, Unggoy Infantryman with Red armor.
 * Yanme'e Major, Yanme'e Airborne Infantryman with no specific armor differences.

UNSC

 * Major, Field Grade officer rank of the UNSC Army and UNSC Marine Corps.
 * Major General, General officer rank in the Army and Marine Corps.
 * Sergeant Major, the highest Enlisted rank in the Army and Marine Corps.
 * Major (Halo 3), a rank in Halo 3.

Forerunner

 * Sentinel Majors, the gold-plated Sentinel constructs with shields.