Affect

Affect may refer to:
 * Affect (education)
 * Affect (linguistics), attitude or emotion that a speaker brings to an utterance
 * Affect (philosophy)
 * Affect (psychology), the experience of feeling or emotion
 * Affect display, signs of emotion, such as facial expression, vocalization, and posture
 * Affect theory
 * Affective science, the scientific study of emotion
 * Affective computing, an area of research in computer science aiming to understand the emotional state of users
 * Reduced affect display, a.k.a. emotional blunting or affective flattening, a reduction in emotional reactivity
 * Pseudobulbar affect, a.k.a. labile affect, the unstable display of emotion
 * Affect (rhetoric), the responsive, emotional feeling that precedes cognition
 * Affected accent; see Accent (sociolinguistics)
 * Affect (company), a defunct Japanese video game developer