The Lepidoptera of Nauru consists of both the butterflies and moths recorded from Nauru, an island country in Micronesia in the Central Pacific.

According to a recent estimate, there are a total of four butterfly species present in Nauru, none of which is endemic. The number of moth species is unknown.

• Badamia exclamationis (Fabricius, 1775)

• Petrelaea tombugensis (Rober, 1886)

• Danaus plexippus (Linnaeus, 1758)
• Hypolimnas bolina (Linnaeus, 1758)

• Choreutis orthogona (Meyrick, 1886)

• Diaphania indica (Sanders, 1851)
• Glyphodes multilinealis Kenrick, 1907
• Parotis suralis (Lederer, 1863)
• Spoladea recurvalis (Fabricius 1775)

• Ethmia nigroapicella (Saalmüller 1880)

• Achaea janata (Linnaeus, 1758)
• Anticarsia irrorata (Fabricius, 1781)
• Eublemma anachoresis (Wallgreen, 1863)
• Mocis frugalis (Fabricius, 1775)
• Mocis trifasciata (Stephens 1829)

• Trissodoris honorariella (Walsingham, 1907)

• Hepalastis pumilio (Zeller 1873)
• Megalorhipida leucodactyla (Fabricius 1794)
• Sphenarches anisodactylus (Walker 1864)

• Etiella zinckenella (Treitschke 1832)

• ? Amyna axis (Guenée, 1852)
• Chrysodeixis eriosoma (Doubleday 1843)
• Spodoptera mauritia (Boisduval 1833)
• Stictoptera cucullioides Guenée 1852

• Westermannia superba (Hübner, 1823)

• Gnathothlibus erotus (Cramer, 1777)

• Erechthias penicillata (Swezey, 1909)

• Cryptophlebia ombrodelta (Lower, 1898)

• First Records of Butterflies (Lepidoptera) from the Republic of Nauru
• North, A. J., 1903. Notes on the zoology of Paanopa or Ocean Island and Nauru or Pleasant Island, Gilbert Group. Records of the Australian Museum 5(1): 1–15.; 14 April 1903
• Rapid Biodiversity Assessment of REPUBLIC OF NAURU