Subject

Subject (subiectus "lying beneath") may refer to:

Philosophy

 * Hypokeimenon, or subiectum, in metaphysics, the "internal", non-objective being of a thing
 * Subject (philosophy), a being that has subjective experiences, subjective consciousness, or a relationship with another entity

Linguistics

 * Subject (grammar), who or what a sentence or a clause is about
 * Subject case or nominative case, one of the grammatical cases for a noun

Music

 * Subject (music), or 'theme'
 * The melodic material presented first in a fugue
 * Either of the two main groups of themes (first subject, second subject), in sonata form
 * Subject (album), a 2003 album by Dwele
 * Subjects (album), a 2021 album by Scale the Summit

Science and technology

 * The individual, whether an adult person, a child or infant, or an animal, who is the subject of research.

Computing

 * Subjects (programming), core elements in the subject-oriented programming paradigm
 * Subject (access control)
 * An element in the Resource Description Framework

Library science and information science

 * Subject (documents) (subject classification; subject indexing; subject searching)
 * Subject term or index term, a descriptor of a document used in bibliographic records

Other uses

 * Commoner, an individual subjected to rule by an elite, e.g. in feudalism
 * Subject in a modern constitutional monarchy, e.g. British subject
 * Course (education), a unit of academic instruction
 * Subject, a 2022 documentary about documentaries by Jennifer Tiexiera