Amazonia refers to the Amazon rainforest.

Amazonia may also refer to:

• Amazonia, Missouri, a village in the US
• Amazon basin, the river basin drained by the Amazon River
• Amazon biome, a biome that covers most of the Amazon basin and some adjoining areas
• Amazon natural region, a region of Colombia
• Amazon Region (Ecuador)
• Amazônia Legal, the largest socio-geographic division in Brazil
• Amazônia National Park, Brazil
• Amazonian Craton, a craton in the Precambrian
• North Region, Brazil, also known as Amazônia
• Peruvian Amazon, the portion of the Amazon basin in Peru

• Amazonia (film), a 2013 documentary film
• White Slave (film), a 1985 horror film, also known as Amazonia: The Catherine Miles Story

• Amazonia (2002), an action-adventure novel by James Rollins
• Amazônia (album), a 2021 album by Jean-Michel Jarre
• Amazonia, a fictional kingdom of women in The Book of the City of Ladies
• Wonder Woman: Amazonia, a one-shot comic book about Wonder Woman
• "Amazonia", the second single from the 2021 album Fortitude (album) by Gojira

• Amazonia (fungus), a genus of fungi
• Amazônia-1, a Brazilian satellite
• Amazonian languages, the indigenous languages of "Greater Amazonia"
• MV Geysir, a cargo ship originally named Amazonia
• The Amazonia Conference, a global warming activist organization
• Universidad de la Amazonía (University of the Amazon), a public university in Florencia, Caquetá, Colombia

• Amazon (disambiguation)
• Amazonis Planitia