Anorexia can refer to:
- Eating conditions
- Anorexia (symptom), the symptom of poor appetite whatever the cause
- Anorexia nervosa, an eating disorder of excessive weight loss and usually undue concern about body shape
- Anorexia mirabilis, referring almost exclusively to women and girls of the Middle Ages who would starve themselves, sometimes to the death, in the name of God
- Relationships
- Sexual anorexia, a term used to describe a lack of "appetite" for romantic-sexual interaction.
- Music
- Anorexia Nervosa (band) a French symphonic black metal band
- Anorexia Nervosa, a two-part album consisting of Anorexia (album) and Nervosa (album), by the band Showbread
