Bird flu may refer to:
- Biology and disease
- Avian influenza, influenza endemic to birds
- Influenzavirus A, the causative agent for bird flu; the genus of the Orthomyxoviridae family of viruses to which all viruses responsible for Avian influenza belongs to, but also includes viruses that are endemic to humans and other animals
- H5N1, a subtype of Influenza A virus endemic to birds, currently perceived as a significant emerging pandemic threat
- Popular culture
No comments have been added.