Appa
Appa (or APPA) may refer to:
- Appa (band), a Japanese rock band formed in 2004
- Appa (character), a creature from the television program Avatar: The Last Airbender
- Appa (rapper), Moroccan-Dutch rapper
- APPA (Haiti), the Haitian political party Peasant Affair with the Haitian People
- American Psychopathological Association, a scientific professional organization
- American Public Power Association, an energy trade organization