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 (judge royal), Hungarian noble from the 12th century
- Appa (rapper), Moroccan-Dutch rapper
- Appa (film), a 2016 Tamil language film
- Appa, name of two trading posts of the Dutch West India Company in Benin, see Dutch Slave Coast
- 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
- Appam, a type of pancake
disambiguation page lists articles associated with the title Appa.
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