Plutonia (Плутония) is a science fiction novel in the "lost world" genre by Russian academician and writer Vladimir Obruchev.

The title Plutonia refers to the novel's setting in a underground world with the source of light and heat turned out to be Earth's core, which the explorers called Pluto for the Roman god of the underworld.

[2] Kirkus Reviews said, "This is a most erudite adventure tale buttressed by accurate geological, biological and botanical information, geared for the intelligent reader.

"[3] Author David Whitehouse said, "The characterisation is poor and the plot overly simple, but the redeeming quality of the book is Obruchev's knowledge of geology.

[6] Besides English, the novel has been translated into: Spanish (1953), German (1953), Finnish (1954), Ukrainian (1955), French (1955), Czech (1941), Hungarian (1956), Romanian (1956), Latvian (1957), Portuguese (1960), and Polish (1966).