Spiny rat may refer to:
or any of the following genera or species of tropical or subtropical east Asian or Australasian rats of subfamily
Murinae:
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Echiothrix, a rat genus from Sulawesi
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Maxomys, a genus of Southeast Asian rats
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Large New Guinea spiny rat ( Rattus praetor), a rat species from New Guinea and nearby islands
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Rattus steini or Stein's rat ( Rattus steini), a rat species from New Guinea
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Mindanao spiny rat ( Tarsomys echinatus) from Mindanao
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Tokudaia, a rat genus from the Ryukyu Islands