Deaf culture describes the social beliefs, behaviors, art, literary traditions, history, values and shared institutions of communities that are affected by deafness and which use sign languages as the main means of communication. When used as a cultural label, the word deaf is often written with a capital D, and referred to as "big D Deaf" in speech and sign. When used as a label for the audiological condition, it is written with a lower case d.

Members of the Deaf community tend to view deafness as a difference in human experience rather than a disability.

The community may include family members of deaf people and sign-language interpreters who identify with Deaf culture and does not automatically include all people who are deaf or hard of hearing. According to Anna Mindess, "it is not the extent of hearing loss that defines a member of the Deaf community but the individual's own sense of identity and resultant actions." As with all social groups that a person chooses to belong to, a person is a member of the Deaf community if he or she "identifies him/herself as a member of the Deaf community, and other members accept that person as a part of the community."