Companion

Companion may refer to:

Relationships in current terms

• Any of several interpersonal relationships such as friend or acquaintance
• A domestic partner, akin to a spouse
• Sober companion, an addiction treatment coach
• Companion (caregiving), a caregiver, such as a nurse assistant, paid to give a patient one-on-one attention

Historic relationships

• Lady's companion, a historic term for a genteel woman who was paid to live with a woman of rank or wealth
• Muhammad's companions, the Sahaba, the friends who surrounded the prophet of Islam
• Companion cavalry, the elite cavalry of Alexander the Great
• Foot Companion, the primary type of soldier in the army of Alexander the Great
• A concubine, a long-term sexual partner not accorded the status of marriage

Fiction

• Companion (Doctor Who), a character who travels with the Doctor in the TV series Doctor Who
• Companion (Firefly), a type of courtesan and entertainer in the TV series Firefly
• The Companions or Heroes of the Lance, a group of heroes in the fictional Dragonlance world
• The Companion (film), a 2015 Cuban film

Music

• Companion, a (1999) album by Patricia Barber
• Companions (Raphe Malik album), 2002

Other

• Companion (ship), an architectural feature of ships
• Companion animal, a pet animal kept for companionship
  • Companion parrot, a pet parrot that interacts with its owner
• Companion matrix, a matrix with a specific relation to its characteristic polynomial p
• Companion planting, planting of different crops in close physical proximity
• "Companion series", a sister show in television
• Companion star, a star in a binary system
• Companion weapon, an object held in the non-sword hand while fencing
• A handbook or guide book or compendium e.g. Star Trek: Deep Space Nine Companion or The Oxford Companion to Music
• A member of a Holy Royal Arch chapter
• A rank within many state-awarded orders