Companion may refer to:

Relationships

Currently

* Any of several

interpersonal relationship In social psychology, an interpersonal relation (or interpersonal relationship) describes a social association, connection, or affiliation between two or more people. It overlaps significantly with the concept of social relations, which a ...

s such as friend or acquaintance * A

domestic partner A domestic partnership is an intimate relationship between people, usually couples, who cohabitation, live together and share a common domestic life but who are not marriage, married (to each other or to anyone else). People in domestic partner ...

, akin to a spouse *

Sober companion A sober companion is a human services-related career path with the goal of helping the client maintain total abstinence or harm reduction from any addiction, and to establish healthy routines at home or after checking out of a residential treatment ...

, an addiction treatment coach * Companion (caregiving), a caregiver, such as a nurse assistant, paid to give a patient one-on-one attention

Historically

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

Film and television

* Companion (film), ''Companion'' (film), a 2025 American film * Companion (Doctor Who), Companion (''Doctor Who''), a character who travels with the Doctor in the TV series ''Doctor Who'' * Companion (Firefly), Companion (''Firefly''), a type of courtesan and entertainer in the TV series ''Firefly'' * The Companion (film), ''The Companion'' (film), a 2015 Cuban film * ''The Companion'', a List of South Korean films of 1984, South Korean film of 1984 * ''The Companion'', a 1994 List of Universal Television programs#MTE_2, Universal Television film

Literature

* The Companion (fairy tale), "The Companion" (fairy tale), a Norwegian fairy tale * The Companion (short story), "The Companion" (short story), a story by Agatha Christie in her 1932 collection ''The Thirteen Problems'' * ''The Companion'', an 1828 literary journal published by Leigh Hunt

Music

* ''Companion'', a 1999 album by Patricia Barber * "Companion", a song by Nikki Lane from the 2017 album ''Highway Queen'' * Companions (album), ''Companions'' (album), by Raphe Malik, 2002 * Companions (EP), ''Companions'' (EP), by Mixtapes, 2011

Other uses

* Bearhawk Companion, an American homebuilt aircraft design, with two seats in side-by-side configuration * Companion 21, an American sailboat design * 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 ''Oxford Companions, The Oxford Companion to Music'' * A member of a Holy Royal Arch chapter * A rank within many state-awarded Order (honour), orders {{disambiguation