Brazilian Air Force creates SIOANI investigation system
- When
- Where
- Sao Paulo, Brazil
- Sources
- 3 public sources

The Brazilian Air Force's IV Air Zone in Sao Paulo set up SIOANI, a system to collect and study reports of unidentified aerial objects, issuing bulletins from March 1969. It wound down by 1972; its records are now in Brazil's National Archive.
Sources
- OfficialSistema de Investigacao de Objetos Aereos Nao Identificados (SIOANI), Arquivo Nacional fundo ARX (opens in a new tab)
- OfficialOfficial UFO Night in Brazil (opens in a new tab)
- OtherA Forca Aerea Brasileira e a investigacao acerca de objetos aereos nao identificados (1969-1986), master's thesis, Joao Francisco Schramm (opens in a new tab)