Guard

Professional occupations

• Bodyguard, who protects an individual from personal assault
• Crossing guard, who stops traffic so pedestrians can cross the street
• Prison guard, who supervises prisoners in a prison or jail
• Security guard, who protects property, assets, or people
• Train conductor, in the UK, Australia, and New Zealand

Security and military

• Guards unit, a type of military unit of the former Soviet Union.
• Russian Guards of Russia and the Soviet Union
• Ukrainian Guards of Ukraine.
• Border guard, a state security agency
• Coast guard, responsible for services at sea
• National Guard, domestic defense units which may have military or law enforcement missions
• Garda Siochana, police service of Ireland who are called "The Guards" in day to day usage
• Bulgarian Guards of Bulgaria

Sports

• Guard (American football), a player between the center and the tackles on the offensive line of a team
• Guard (grappling), a position in martial arts in which the person on the bottom has his/her legs/hips between themselves and their opponent.
• Point guard, a basketball position
• Shooting guard, a basketball position
• A defensive position in historical fencing (see also En Garde)

Others

• Guard (computing), in programming language, an expression that directs program execution
• Guard (weapon), the handle of a sword
• Guard dog, employed to watch for unwanted or unexpected animals or people
• Guard interval, intervals in transmission, used in telecommunications
• The Guard, a Canadian television series
• In buildings, a "guard" can mean a barrier to stop people from falling off edges of raised walking surfaces.
• Abdominal guarding, a medical sign
• The aircraft emergency frequency, commonly referred to as "guard"
• Mate guarding - guarding of a potential or former mate from other individuals