Armoured forces, heavy cavalry, or tank units

Armour or armor(American spelling)is protective clothing for combat. Other meanings include: Military:

Armour Thyroid is a thyroid extract used as a thyroid hormone supplement

Armor (novel), by John Steakley

Vehicle armour, protecting armoured fighting vehicles or warships

Armour and Company, slaughterhouse and meat packers

Armor for Sleep, a New Jersey band

Armour, South Dakota, the county seat of Douglas County, South Dakota

Armour (zoology) or Armor (zoology), referring to external body protection developed by animals

Belt armor of battleships

Armor (hydrology), refers to beaches, stream or river beds which have significant rock or boulder occurrence

"Armor" is Breton for "the sea" and means the part of Brittany on or near the coast

Hisako Ichiki, a Marvel Comics character and a member of the X-Men, is known by the codename Armor.