Bilin may refer to:
- Bilin, Mon State, a town in Mon State in Myanmar
- Bilin (biochemistry), a type of biological pigment with a tetrapyrrole structure, for example found in bile
- Bil'in, a Palestinian village in the West Bank
- The Bilen people, an ethnic group which mainly inhabits Eritrea and speaks the Blin language
- The German name for the Czech town of Bílina