Bagenal or Bagnal is a surname, and may refer to:
- Beauchamp Bagenal
- Dudley Bagenal, an Irish soldier
- Frances Bagenal
- Henry Bagenal, an Irish soldier
- Hope Bagenal
- Lord Bagenal
- Nicholas Bagenal, an English-born Irish soldier
Bagenal or Bagnal is a surname, and may refer to: