The Paraguaian hairy dwarf porcupine (Coendou spinosus) is a porcupine species from the family Erethizontidae. It is found in Argentina, Brazil, Paraguay and Uruguay.

They have a short tail and gray brown quills and feed on fruits, ant pupae, vegetables and roots.

This species was formerly sometimes assigned to Sphiggurus, a genus no longer recognised since genetic studies showed it to be polyphyletic. The population formerly recognised as the orange-spined hairy dwarf porcupine (Sphiggurus villosus) has been reclassified to this species. Its closest relatives are the bicolored-spined porcupine (Coendou bicolor) and the black dwarf porcupine (Coendou nycthemera).

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