Byleth can refer to the following characters:
or Heroes:
- Byleth: Proven Professor, a Infantry Sword user who appears in Fire Emblem: Three Houses.
- Byleth: Tested Professor, a Infantry Sword user who appears in Fire Emblem: Three Houses.
- Byleth: Fell Star's Duo, a Flying Red Tome user who appears in Fire Emblem: Three Houses.
- Byleth: The Fódlan Star, a Infantry Green Tome user who appears in Fire Emblem: Three Houses.
- Byleth: The Fódlan Light, a Infantry Blue Tome user who appears in Fire Emblem: Three Houses.
- Byleth: Sublime Light, a Flying Colorless Tome user who appears in Fire Emblem: Three Houses.
- Byleth: Fount of Learning, a Infantry Blue Tome user who appears in Fire Emblem: Three Houses.
- Byleth: Vengeance Vessel, a Infantry Sword user who appears in Fire Emblem Warriors: Three Hopes.
- Byleth: Frosty Professors, a Armored Sword user who appears in Fire Emblem: Three Houses.